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Analysis of Products Marketed as Henna for Hair: Part Two

Table of Contents

Introduction

This article is the second in a series comparing products sold as henna for hair. The purpose of this series is to describe and compare henna for hair products commonly found online on sites such as Amazon or eBay as well as in ethnic grocery stores, health food stores, and import stores in the USA.

Part One introduced objectives and methodology. It compared products that are marketed as either “pure henna,” or which are described as henna blended with other natural herbs for a red hair color result. To read part one, click here.

This article, Part Two, will continue using the same format as Part One. Part Two examines “henna for hair” products claiming to color hair brown or brunette. First, product labels are analyzed. Second, the plant powder is described in terms of texture (sift), color, and odor. After mixing, the qualities of the resulting pastes are also described. Finally, each past sample is tested using paper chromatography to determine the presence of added dyes. The products are compared to Ancient Sunrise pure henna and indigo powders.

Many products labeled and sold as henna contain additional ingredients, either plant-based or synthetic. Products whose labels claim to be “100% natural” or who use similar terms often fail to disclose all ingredients. Many products are imported from countries whose regulations are less stringent or loosely enforced. Additionally, products vary in quality. Poor sift results in powders containing larger pieces of plant particulates as well as sand. Products with poor packaging will become stale more quickly, causing the dye to be less effective. In many cases, products marketed as natural and safe in all actuality contain added dyes such as azo-dyes, metallic salts, and parapheneylene-diamine (PPD). To learn more about the difference between BAQ henna, compound henna, and other products claiming to be henna, read this article.

The FDA has a standard for henna and products entering the United States labeled as a “henna” hair coloring product. These guidelines do not appear to be regularly enforced as are regulations for products labeled as henna for use on skin. The result is that many products labeled as “henna for hair” which do not meet the guidelines make their way into the United States with relative ease.

The FDA forbids the sale of and is empowered to confiscate of any henna product labeled for skin use, or products showing images of henna used on the skin. Customs and border protection is empowered to search the importing company’s website to determine if henna is intended for use on skin, and may seize and destroy henna that appears to be imported for use on skin.

“Black henna,” or products labeled as henna containing PPD, have been known to cause skin reactions and sensitization. For more information about black henna, read the articles “Henna is Not Black,” “What You Need to Know About PPD,” and Chapter One of the Ancient Sunrise E-book.

The purpose of these studies is to determine the quality of those products in comparison to Ancient Sunrise® Henna for Hair products and to test for the existence of dye additives. This series investigates the following categories:

  • Part One: “Pure” henna, herbal henna mixes, and red result henna for hair products
  • Part Two (this article): Brunette result henna for hair products
  • Part Three: Black result henna for hair products

Premixed “Henna for Hair” Products

All of the products analyzed in this section claim to contain a blend of multiple plant dye powders and in some cases additional synthetic ingredients. All claim to contain henna. Most claim to contain indigo. Because henna and indigo require separate mixing and dye release processes, Ancient Sunrise packages plant powders separately. The most effective method for mixing henna and indigo involves mixing henna first with an acidic component and allowing time for dye release, normally 8-12 hours at room temperature. Indigo does not require an acidic component nor dye-release time because the dye releases and demises rapidly. It is mixed with only water and then combined with dye released henna just before applying to the hair. To learn more about the proper way to mix henna and indigo for brunette results, read this article.

Premixed “henna for hair” products may provide a simpler mixing process but in turn sacrifice full coverage and color permanence. Most of the products in this article recommend mixing the powder with water to form a paste and applying immediately. This is most likely due to indigo dye’s rapid demise. Without proper dye-release, the lawsone and indigo dye molecules will not bind to the hair as effectively. The result may be lighter than desired and will fade over time.

Finally, many of the following products report a number of “ayurvedic herbs” in their ingredients in addition to plant dye powders. Most of these herbs do not affect the color result but claim to condition the hair and scalp and/or promote hair growth. Please note that this article is not meant to support or deny the effectiveness of these claims. Descriptions of the herbs should not be interpreted as recommendations.

Sample Selection and Label Analysis

Eight “henna for hair” products were selected for this study based on the following criteria:

  • 1: The product is marketed as a “henna for hair” product or a plant-based product containing henna which is meant for coloring hair.
  • 2. The product claims to color hair a shade of brown or brunette.

The traditional method for achieving a brunette result using plant dye powders involves a combination of henna and indigo. Many of the products selected for this article include both henna and indigo in their ingredients disclosures. These products will be compared with Ancient Sunrise Rajasthani Twilight Henna and Ancient Sunrise Zekhara Indigo plant dye powders.

Below are the images of the labels for the selected samples. In the future, each sample will be referred to by its assigned number.

#1

This product is made in the United States and is widely available at health stores and online. The labeling and packaging are thorough in comparison to many “henna for hair” products and are reminiscent of the labeling and packaging of box hair dye. The color on the label is “chestnut.”

The ingredients listed are “henna, indigo, centaurea, rhubarb, and beetroot.” Centaurea, also known as cornflower, can be used as a natural blue dye for fabric. Whether or not it is an effective dye for hair is unknown. Most natural fabric dyeing processes involve boiling and the use of a mordant. Similarly, rhubarb and beetroot have been used to dye fabrics yellow and red respectively. To learn more about what ingredients do or do not effectively color hair, read “Does it Dye Hair?” Rhubarb is acidic and may aid in dye-release, but the instructions do not include a dye-release period.

The internal pamphlet offers detailed instructions and information regarding application, patch testing, and a warning against use near the eyes. The instructions are to mix the powder with water, apply, and leave for one hour.

#2

This product is made in India. It claims to be for dark hair and gives hair a “rich brown color and shine.” The ingredients listed are as follows: “Mehndi (Lawsonia alba), Aam Beej (Mangifera indica), Neem (Azadirachta indica), Arjun (Terminalia arjuna), Gambhari (Gmelina arborea), Daruhaldi (Berberis aristata), Kikkar gaund (Acacia arabica).” While henna is listed as the first ingredient, indigo is not mentioned at all.

The product is described as “ayurvedic,” which is a term relating to an alternative system of medicine often involving a number of herbs native to South Asia. Aam beej is mango seed. This is not a dye but is meant to condition hair. Ancient Sunrise supplies mango seed butter here. Neem is another popular ayurvedic herb used for hair conditioning in either a powder or oil form. Neem does not dye hair. Arjun is an ayurvedic herb. It appears to have potential dyeing properties on fabric but needs a mordant. Its ability to dye hair is unknown. Gambhari, also known as English Beechwood, is used in ayurvedic medicine and claims to condition hair and stimulate growth. It does not dye hair. Daruhaldi is also known as Indian Barberry. The plant is used to dye fabrics and tan leather due to its high level of tannins. Its effectiveness in coloring hair is unknown. Kikkar gaund, also known as Gum Arabic, is both eaten and used in topicals. Because it contains a high amount of mucilage, it can act as a thickener or binder when mixed with water. It is a common ingredient in both cosmetics and food. It does not have dye properties.

Like sample #1, this product’s instructions recommend mixing the powder with water. It recommends leaving the paste in the hair for half an hour for conditioning, and one hour or longer for “maximum color highlights.” In one Amazon review, a customer said that the product made her hair “really red.” It is likely that the absence of indigo and the ineffectiveness of the other herbs meant for coloring caused the result to be red rather than brunette.

#3

 

This product is from India. The color result advertised on the label is “dark brown.” The ingredients are as follows: “Indigofera tinctoria, Lawsonia Inermis, Embelica officianalis, Eclipta alba, Azadiracta indica, Bacopa monnieri, Vetiveria zizaniodes. The first three ingredients are indigo, henna, and amla powder respectively. A dark brunette mix should have a higher proportion of indigo to henna. Amla powder functions as an acid and aids henna/indigo mixes in binding to the hair effectively for a darker result. Eclipta alba, also known as bhringraj, is an ayurvedic herb known for its potential hair growth properties. Azadiracta indica, as mentioned before in sample #2, is also known as neem. Bacopa monnieri, also known as brahmi, is an ayurvedic herb that claims to promote hair growth. Finally, vetiveria zizaniodes is also called vetiver, which is another ayurvedic herb meant to condition hair and stimulate growth. Vetiver has a pleasant scent. Ancient Sunrise carries a soap bar which contains cardamom and vetiver. Except for the initial three ingredients, the remaining reported ingredients are ayurvedic herbs without dyeing properties.

The package includes gloves, a plastic cap, and an instructional pamphlet. It includes warnings about sensitivity and instructions for patch testing. The product warns about potential headaches and itching. This is most likely in reference to the reaction to indigo powder, which causes some people to have discomfort. To learn more about plant dye powder allergies, read “Plant Dye Powders and Seasonal Allergies.”

The product recommends using coconut oils or other oils to relieve itching or headaches. Itching after using plant dye powders is often due to acidity or failure to fully rinse out all residue. Because this product contains ingredients other than henna and indigo, it is difficult to determine if something else may cause such a reaction. To learn more about dryness and itching after using plant dyes, read “Why Hair Feels Dry After Henna and How to Fix It.”

The instructions recommend mixing the powder with warm water and a teaspoon of salt. Ancient Sunrise recommends adding salt to indigo paste to help the dye bind more effectively to the hair. Because this product is a premixed powder, it is not possible to mix salt with indigo paste separately before adding it to the henna paste. This product recommends leaving the paste in the hair for 2-3 hours. It also recommends using a hairdryer after rinsing. Heat can help deepen the resulting color. However, as with the other samples, this product does not recommend a dye-release period.

#4

This product is from India. The ingredients are listed as follows: “Mehindi, Harred, Berhera, Amla, Shikakai, Coffee, and other Herbal…”

Mehindi is another word for henna powder. Harred, also known a harad or haritaki, is an ayurvedic herb with a variety of reported health benefits. Its scientific name is Terminalia chebula. It does not dye hair. Berhera (Terminalia bellerica) goes by many names including behara and belleric. It appears that the combination of haritaki, belleric, and amla powders is often known as “triphala,” a popular ayurvedic herbal remedy. Amla has been mentioned before and is an effective dye-release agent as well as a popular ayurvedic herb. Shikakai is an herb used for cleansing and conditioning hair. The addition of coffee is most likely for the purpose of color, but coffee is not an effective hair dye. Katha (Acacia catechu), also known as catechu, is an herb used both in medicines and in food as a spice. It is used as a dye for wool, silk, and cotton. Its effectiveness as a hair dye is unknown.

The ingredients list does not include indigo powder. Overall, the product appears to be henna along with a number of ayurvedic herbs, with coffee and katha potentially affecting the color result.

This product recommends mixing the liquid with “light hot water” (warm water?) in an iron bowl and letting it sit for 2-3 hours. The use of an iron bowl when mixing henna is an old tradition and is meant to affect the dye-release in a way that causes a darker result. It is now known that using iron is not necessary. There are no additional instructions regarding preparing the hair, applying, processing and rinsing. There is no inner pamphlet, standard warnings or patch test instructions.

The product claims to contain no chemicals or dyes and claims to cause zero side effects. Most likely it means no synthetic dyes. Caffeine is transdermal. The addition of coffee in this product may cause jitters and headaches.

#5

This product labeled as henna with herbal conditioner for a dark brown result. The country of origin is India.

The ingredients are listed as follows: “Henna, Amla, Kali Harar, Tulsi, Bahera, Lodh, Jamun, Chandan, Kattha, Shikakai, Bhringraj.” Amla, shikakai, bahera, and bhringraj have been described previously in this article.

“Kali Harar” seems to be a misprint of “Kali Harad,” also known as harad , harade, or harred. This is the same herb as haritaki, which has been previously described. Tulsi (Ocimum sanctum) is also known as holy basil. It is an ayurvedic herb used for many purposes. Lodh (Symplocos racemosa) is a tree used for ayurvedic medicine and whose bark is used for yellow dye. Its effectiveness as a hair dye is unknown. A brief account of the plant being used for dyeing hair yellow can be found here. Jamun (Eugenia jambolana) is also known as black plum. The bark and fruit are used in avurveda. While jamun does not appear to have dyeing properties, it does contain anthocyanins which may aid in cooling or neutralizing the brighter tones from henna. Ancient Sunrise Nightfall Rose fruit acid powder is made from the purple aronia fruit also contains a high amount of anthocyanins. Ancient Sunrise Nightfall Rose Powder can be found here. Chandan is also known as sandalwood. It can be used to dye wool or fabrics red or brown but requires boiling and a mordant. Its effectiveness as a hair dye is known. Kattha is another name for katha, or catechu, which is mentioned in sample # 4.

The instructions for this product recommend mixing the powder with water and letting it sit overnight. This product does not appear to contain indigo. Because amla and other fruit powders are included with henna, the powder may be acidic enough to be able to dye release overnight when mixed with water. Like other samples, the product recommends using an iron container, which is not necessary. The instructions recommend leaving the paste in the hair for ½ an hour to 1 hour or longer.

#6

 

This product is assembled and sold by an American company. The origins of the plant dye powders is not listed. This brand is commonly found in health stores in the US. The outer packaging reports that the ingredients are certified organic and contain no ammonia, peroxide, metallic salts, or PPD.

The ingredients are as follows: “Indigofera tinctoria (indigo) leaf powder, Cassia auriculata (senna) powder, Lawsonia inermis (henna) powder, Phyllanthus emblica (amla) fruit powder.” All reported ingredients save for amla powder are plant dye powders. Amla functions as an acidic component for dye-release and also assists in neutralizing warmer tones from henna and cassia.

The labeling and insert include warnings and patch testing instructions required from the FDA. Unlike some previous products in this article, this product recommends against using any metallic container or mixing implements. Metal such as stainless steel is fine to use when mixing henna. It does not cause any issues.

The instructions recommend mixing the pre-mixed powder with boiling water and applying it to the hair once it is cool enough. It claims that its “finer mesh botanicals do not need to cure.” That implies that only coarser sifts require dye-release time, which is untrue. The process of dye release involves the lawsone precursor molecules migrating from the dry powdered plant leaves into an acidic liquid environment where the molecules remain stable until the user is ready to apply. The boiling-water method will force henna to dye-release rapidly but the resulting paste will contain fewer stable aglycones and will therefore be weaker. It will often result in lighter, brassier, impermanent results.

Additional recommendations involve replacing some of the boiling water with egg or yogurt (“for extra conditioning,”), lemon juice or chamomile tea (“to bring out golden highlights”), hibiscus tea (to “intensify reds”) and coffee (“to enhance brown tones”). We know that these ingredients have little to no effect on the hair color result. Lemon juice can in fact cause the resulting hair color to oxidize much darker over time. Egg and yogurt will coat the hair and inhibit dye uptake. Coffee will not permanently color hair brown and will cause jitters and headaches. To learn more about what not to add to henna, read “Don’t Put Food on Your Head” and “Does It Dye Hair?”

#7

 

 

This product is from India. It is labeled as “brown henna.” A single box contains six thin, flat packets. Each packet further contains a small foil pouch containing 10 grams of product and an instructional paper. Each pouch is meant to be enough for one application.

The instructions recommend mixing a packet of powder with 30-40 ml of water (roughly two to three tablespoons). The paste is then to be applied and left in the hair for 30-40 minutes.

There is no ingredient disclosure in any part of the packaging. The small amount of product per application in combination with the short processing time suggests the presence of PPD or other synthetic dyes.

#8

This final product is made in India. I can be bought online as well as in ethnic stores. “Marron” is another word for brown. The ingredients are as follows: “Natural Henna, Aritha, Amla, Shikakai, 2 Nitro, PPD & Other Natural Herbs.” While henna is the first ingredient listed, we can see at the end of the list, “2 Nitro, PPO, & Other Natural Herbs.” It is impossible to know what the other “natural herbs” are.

PPD is clearly listed. 2 Nitro is also known as 2-Nitro-P-phenylenediamine. It is a derivative of PPD. Aritha is also known as soapnut, which is used for cleaning. It contains natural saponins. It does not dye hair. Whether or not it is ideal to use a saponin in a henna mix is unknown. The natural soap may or may not affect dye uptake.

It is likely that the majority of the color effect in this product comes from PPD and its derivative. Indigo is not listed as an ingredient, yet the product claims to color hair brown. The instructions recommend mixing the powder with water and letting it sit for 30 minutes before applying, then leaving it in the hair for 2-3 hours. This is a very long time for a product containing PPD. Most box hair colors that contain PPD recommend processing for no more than half an hour.

Powder and Paste Qualities

5 grams of each product was measured into respective containers. Color, scent, and texture was noted for each sample. Each sample was mixed with 15 ml of room temperature distilled water. Prior to stirring, one can often see larger plant particulates which rise the surface of the water. Color, scent, and texture of the resulting pastes were noted.

While plant dye powders can vary in color, it is not always indicative of quality or freshness. A common misconception is that fresh henna powder has a bright green color. In some cases, green dye is added to the powder to make the appearance more appealing. Pure henna powder can be pale brownish green to bright green in color. Indigo powder tends to be very bright green. When mixed with water, indigo will turn a deep green-blue. Additional herbal plant powders may affect the color of the powder and paste. What is not ordinary is for powders and pastes to be vivid orange or red, or very dark brown or black.

#1

The powder is a light olive green color. It has an earthy, plant scent without any strong synthetic, floral, or herbal scents. The sift appeared average to the naked eye. When water was added, the liquid turned a dark green color almost instantly. Some larger plant particulates (pieces of leaf, vein, or petiole) floated to the surface of the liquid. After stirring, the resulting paste was dark green, slightly gritty, and had a faint herbal scent.

#2

The color of this powder was a light, yellow-olive color. The scent was plant-like and neutral. The powder included some soft lumps that broke with a light touch. When mixed with water, the resulting paste was a medium green. Some larger plant particulates were visible floating on the surface of the liquid prior to stirring, but not as many as in sample #1.

#3

The powder was chalky sage green. The sift appeared normal to the naked eye. No strong scent was noted, but the classic “frozen peas” scent of indigo could be detected. Upon adding water, the paste turned a medium to deep green color. A fair amount of particulates were floating on the surface of the water. The paste had a stretchy, mucous texture which is common with hennas from certain regions.

#4

This powder was a dusty, light brown color. The scent of amla and other herbs was predominant. A considerable amount of larger plant particulates could be seen both in the powder and floating on the surface of the added water. The paste was a gray-brown color with a lumpy, gritty, and mucous texture.

#5

The powder was a dusty, light brown color, somewhat lighter than that of sample #4. No chunks or large plant particulates were visible. The powder had a notable “herbal henna blend” scent. When mixed with water, the paste frothed. The paste had a faint metallic and chlorine scent along with the herbal scent.

#6

The powder was a bright, light green color. There were not large plant particulates visible in the powder. The classic indigo scent was present. There was no noticeable herbal or synthetic fragrance scent. When water was added, the powder turned a bright green color. After mixing, the paste was thick and dense like wet clay. The paste was a similar color to cooked spinach.

#7

The powder was a green-gray color with some soft lumps that broke apart under light pressure. No discernible scent was noted. The paste frothed when mixed with water. The color of the paste was a chalky sage green.

#8

Immediately upon opening the package, this product had a strange, strong scent that was difficult to describe or identify. The color of the powder was terracotta orange. When water was added, some plant particulates could be seen floating on the surface. The paste was a bright orange-brown and had a thick consistency like icing.

Ancient Sunrise Rajasthani Twilight Henna (ASRT)

This powder had a pale, yellow-green color and scent like dried grass or straw. After adding water, there were very few plant particulates noticeable on the surface. The paste had a mucous-like and lumpy consistency similar to cottage cheese upon first stirring. The paste became smoother and stringy after stirring. The color of the paste was a muddy greenish brown.

Ancient Sunrise Zekhara Indigo (ASZI)

This powder is fine and fluffy with a bright green color like matcha tea powder. It has a distinct scent that is slightly metallic and reminiscent of frozen peas. When mixed with water, the paste is dense and smooth like wet clay. The paste turns a deep, blue-green.

2:1 Ratio of ASZI and ASRT

For the purposes of this article, a mixture of two parts indigo and one part henna was created to mimic a premixed product intended to color hair dark brunette. Normally, henna and indigo pastes are mixed separately before being combined. This resultant powder naturally showed characteristics of both ASRT and ASZI. The color was a lighter green than indigo powder alone, and mixed to a dense and slightly slippery paste.

Chromatography

Paper chromatography is a simple method used to separate dyes and/or to determine the existence of dyes in a substance. A small sample of the substance is placed on a strip of paper which is lowered into a glass chamber where the end of the paper strip wicks a liquid solvent. As the solvent moves up the strip and through the sample, the dye or dyes are pulled up along the paper at varying rates. By comparing chromatography results of different “henna for hair” product samples, one can see speculate on the dyes contained in each sample. Part One of this series discusses the chromatography method in further detail.

Here is a time-lapse video of a paper chromatography test from Part One.

 

This group of samples was tested under the same conditions as the set from Part One. Samples were tested in

1) A solvent of 99% isopropyl alcohol for 20 minutes,

2) A solvent of equal parts distilled water and 99% alcohol for 15 minutes, and

3) A solvent of equal parts distilled water and 100% acetone for 15 minutes.

It was necessary to test samples under multiple conditions because the target dyes were unknown. As will be seen in the results, some dyes will react differently to each solvent. Unlike the samples in Part One, which were mixed with a leon juice dilution and allowed time for dye release, these samples were mixed with distilled water only. The resulting pastes were applied to the paper strips and tested immediately. This is because a number of the samples in this group contain indigo which releases rapidly and requires a neutral or alkaline environment. In addition, most of the products’ instructions recommended mixing with water only. In order to maintain consistency across samples, room temperature distilled water was used with each sample rather than following individual product mixing instructions.

Results

99% Isopropyl Alcohol for 20 Minutes

Each sample was tested on five individual paper chromatography strips. Most results were consistent; occasional inconsistent results were disregarded and attributed to variation in paper strip composition or other unforeseeable factors.

Below is a comparison of all samples including Ancient Sunrise Rajasthani Twilight Henna (ASRT), Ancient Sunrise Zekhara Indigo (ASZI), and a 2:1 ratio of ASZI and ASRT. One strip of each sample was selected to create this image. Note that the solvent front (the highest point reached by the solvent) is consistently lower in samples 1-5. This is due to inconsistency in the paper strip manufacturing rather than a difference in the product samples. However, it cannot be ruled out that the change in paper density may have affected the way we visually interpret the results.

Additionally, this image was taken after all samples had been tested and the paper strips had fully dried for several hours. Some samples lost color while others deepened in color. This will be discussed in the Limitations and Considerations section. Following images will show samples immediately following testing.

99% isopropyl alcohol is a virtually anhydrous solution. In other words, there is very little water. While a very small amount of water exists in the sample paste and in the solvent, it may not be enough to cause oxidation. Therefore, this condition should not reveal much lawsone or indigo dye. We see significant differences in the colors of samples 7, 8, and 2:1.

Sample#1

The result had a very pale, yellow-green tone. While the stain appears mostly even from the point of application to the highest point reached by the solvent (also known as the solvent front), the deeper part of the stain appears to end about two thirds of the way up. This sample reported henna, indigo, centaurea, and beetroot as its ingredients.

Sample#2

Sample #2 had results which were paler in color. This was an herbal blend which contained henna along with many other herbs which may or may not have dyes. While Sample #1 contained some amount of indigo, this sample does not.

The result also showed some very slight green-blue vertical stripes which may suggest that dye was added to affect the color of the powder. This was seen in a sample in Part One of this series. Because it has been believed that a green henna powder indicates freshness, some manufacturers add dye to change the powder’s appearance. It is possible that this is what happened here. Part One discusses the practice in more detail.

Sample #3

The result was a yellow-green tone similar to the result for sample #1. Like #1, this sample also reported indigo in its ingredient list. The dyes involved in this sample did not move with the solvent as much as the previous two; much of the coloration remained lower near the point of application rather than rising all the way to the solvent front.

Sample #4

This sample’s results was closer to that of Sample #2. Sample#4 and #2 are both herbal blends which do not list indigo in the ingredients. Thus, the result is very pale because whatever henna may be included in the mix is diluted with herbal ingredients which contain no dye. However, this sample shows some dark red-brown banding that appears just above the point of application and does not move further up the strip. This is inconsistent with henna’s lawsone dye. It is unclear what may cause such results.

Sample #5

This was another henna/avurvedic herbal blend which did not include indigo in the ingredients list. Similar to Sample #4, the result was mostly pale with some darker red-brown banding just above the point of application.

Sample #6

It should be noted that while the solvent front for this sample is much higher than the previous five samples, this is most likely due to a change in the manufacturing of the paper strip rather than a factor of the sample itself. This sample showed a gray-green color which was darkest about halfway between the point of application and the solvent front. One can see some banding about a centimeter above the point of application. This sample reported indigo as its first ingredient, followed by henna, cassia, and amla. The result is visually similar to the results of samples #1 and #3.

Sample #7

This sample differed from previous samples. There was a light red-brown band just above the point of application as well as some green vertical striping, most noticeable in the paper strip second from the right. As the sample dried and oxidized, the overall color deepened further and the green tone was overtaken. This effect was unlike that of most other samples which darkened very little. This product did not include a list of ingredients. The green coloration is very likely due to the same kind cause as in sample #2: an added synthetic dye rather than indigo.

Sample #8

This sample showed results unlike any of the previous seven samples. The overall stain was deep orange with a very noticeable red-brown band above the point of application. While the product reported two forms of PPD in addition to henna and some ayurvedic herbs, this does not explain the vivid orange color. There is very likely another dye or number of other dyes which were not listed.

ASRT

The Ancient Sunrise Rajasthani Twilight henna sample showed a pale stain that was similar to samples #1-6 but had a warmer orange tone. This would make sense as this is a pure henna whereas the other samples in this collection are blends of henna and other plant powders.

ASZI

This sample was pure Ancient Sunrise Zekhara Indigo. The result was a deep olive green color with some hints of banding about halfway between then application point and the solvent front. As the sample dried, the color oxidized to a pale, gray blue.

2:1 ASZI/ASRT

This sample was a blend of two parts Ancient Sunrise Zekhara Indigo and one part Ancient Sunrise Rajasthani Twilight henna. This mix is what is recommended for dark brunette results. The color was much like the results for pure indigo powder, but with a slightly warmer tone due to the addition of henna. When the paper strips dried, the color oxidized to a cooler brown tone.

Of the eight samples, sample #6 came closest in appearance to the 2:1 indigo/henna mix. Sample #6 reports indigo as its first ingredient, followed by cassia auriculata, henna, and amla.

Sample #3 also reports indigo as its first ingredient, then followed by henna, amla, and a number of herbs that do not dye. The results from sample #3 also have a similar, gray-green tone, but much lighter. It is likely that the strength of the plant dyes was diluted with the addition of other plan powders.

1:1 Dilutions for 15 Minutes

The results from an anhydrous solvent such as isopropyl alcohol will differ from that of a solvent containing water. In prior tests, using pure acetone as a solvent yielded results that were not useful; therefore, pure acetone was not used as a solvent condition in this series at all. In the case of the lawsone and indigo dye molecules, they require at least some water in order to oxidize. While the samples in the 99% isopropyl alcohol condition above were mixed with a few milliliters of water, it was not quite enough to allow the colors of the dye molecules to show.

This section reports results of the using A) a 1:1 mixture of isopropyl alcohol and distilled water and B) a 1:1 mixture of acetone and distilled water. Overall, the stains on the samples were much more visible. Results from both conditions were relatively similar to one another. Samples #7 and #8 were especially unique.

Below are results for both conditions. The top image shows the results for the 1:1 alcohol/water solvent condition. The bottom image shows results for the 1:1 acetone/water solvent condition.

Sample #1

Results from this sample were a pale orange tone which was darkest below the halfway point between the point of application and the solvent front, suggesting a wide dye band. As the paper strip dried, the color appeared lighter. The acetone/water solvent condition yielded a darker result and seemed to show a muted, red-brown section from the point of application to roughly halfway up, and a lighter orange tone closer to the solvent front.

Sample #2

Sample #2 appeared very similar to sample #1 but lighter in color. In the 1:1 alcohol/water solvent condition, the stain more even from the point of application to the solvent front. In the 1:1 acetone/water condition, a similar red-brown tone is visible from the point of application to about 2/3rds of the way up. While there was a light green streak in the results for the 99% isopropyl alcohol condition, a green tinge can be seen in the 1:1 alcohol/water condition. The green dye moved all the way up to the solvent front, where it created a thin line. The green tone was no longer visible under the 1:1 acetone/water condition. This suggests that whatever caused the green color is a dye that interacts differently with acetone and alcohol.

A faint green line is perceptible at the very edge of the solvent front in sample #2.

Sample #3

Sample #3 was, like in the first condition, very similar to samples #1 and 2. No distinct banding is noticeable, but the stain gradually fades as it approaches the solvent front. In the 1:1 acetone/water condition, the solvent moved much further up the paper strip. This is most likely due to a variation in the paper itself. As the samples from the 1:1 acetone/water solvent condition dried, the color oxidized moderately and showed a soft brown tone.

Sample #4

Sample #4 was similar to the previous three samples. There is no distinct banding and the color appears relatively even from the point of application to the solvent front, but fades somewhat as it approaches the solvent front. There is a muted red-brown tone from the point of application to about halfway up to the solvent front. Above the halfway point, the color is lighter and brighter. The color of the results deepened slightly after the paper strip dried.

Sample #5

The paper strip in the center of the 1:1 alcohol/water solvent should be disregarded as an inconsistent result most likely caused by a variation in the paper strip. In the 1:1 acetone/water solvent condition, the height of the solvent fronts matched. Sample #5 showed an even, light orange stain and no distinct banding.

Sample #6

This sample was very similar to samples #1-3. The result was pale and even with no distinct banding. On some strips in the 1:1 alcohol/water condition, the color appears darker neat the point of application and gradually fades toward the solvent front. In the 1:1 acetone/water condition, the color appears to be more concentrated near the solvent front in a brighter orange band.

Sample #7

The darker color is much more prominent in this condition in comparison to the result from using 99% isopropyl alcohol solvent. As the paper strip dried, the color oxidized further. This sample did not include an ingredients list in its packaging. The deep, almost purple-gray tone suggests that this sample may contain PPD. A previous test of black hair dye containing PPD yielded results which had a similar color, but much darker.

Sample #8

The bright orange color detected in the first condition is even more prominent in this second condition. While pure henna can color hair and skin a deep orange color similar to this, it is clear that this vivid orange tone is cause by some other type of dye. The lawsone dye molecule requires a slow and steady dye release period in an acidic environment. Given the right conditions, a good lawsone stain will oxidize to a deep orange to reddish-brown on light hair. This product, on the other hand, was tested immediately after being mixed with distilled water. It yielded a vivid orange result immediately.

ASRT

Both conditions resulted in a light, orange tone which slightly after the paper strips dried. In comparison to the 99% isopropyl alcohol condition, the dye is more visible. This is likely because the lawsone dye molecule was unable to release and oxidize as well in an anyhydrous condition; in other words, some amount of water is necessary for lawsone to create a visible stain.

ASZI

While the initial result of the 1:1 alcohol/water solvent condition was paler, some potential banding can be seen in the 1:1 acetone/water condition. The result shows some muted blue-green tone upon removal. After the paper strips dried and oxidized, the color of the results in both conditions deepened to a blue-violet tone. This is in line with the normal oxidation process of the indigo molecule.

2:1 ASZI/ASRT

In both conditions, the results of the 2:1 mixture of ASZI and ASRT appeared initially pale orange in tone. This is likely because the lawsone dye from the henna was more visually prominent at first. However, as the paper strips dried and the dyes oxidized, more of the cool tones from the indigo molecule emerged, turning the overall color a muted brown tone. Based on this result, one would expect that other samples which include more indigo than henna should show a similar result. However, with the exception of samples #7 and 8, the products tested in this article all yielded pale orange brown results that look more similar to the ASRT sample than the 2:1 mixture.

Discussion

Samples # 1, 3, and 6 reported indigo in their ingredients disclosures. One would expect for the chromatography results to appear similar to that of the 2:1 mixture of Ancient Sunrise Zekhara Indigo and Ancient Sunrise Rajasthani Twilight henna, and different from the sample of Ancient Sunrise Rajasthani Henna alone.

In the 1:1 solvent/water dilution conditions, the sample of Ancient Sunrise Zekhara Indigo alone yielded results which were green at first, and which oxidized to a pale violet tone. This tone deepened the result of the 2:1 mixture. This is especially noticeable in the 1:1 alcohol/water condition. After drying, the result was a light, cool brown. One would expect to see a similar tone in samples #1, 3, and 6. Samples #1 and 3 show some slightly cooler tones in comparison to the ARST sample and other samples which did not include indigo. Sample #6 did produce a greenish color in the 99% isopropyl alcohol condition. After the paper strip dried, that color oxidized to a cooler brown tone that was more prominent that the previous five samples of the same condition. In the 1:1 acetone/water condition, the result of sample #6 was much lighter, with a golden band appearing just below the solvent front.

Assuming that the product tested did include henna and (in the case of #1, 3, and 6) indigo, it is likely that the addition of other plant powders diluted the appearance of the lawsone and indigo dyes. The quality of the plant dye powders could have also affected the results.

The most salient results came from samples #7 and 8. Sample #7 did not include any ingredients disclosure on its packaging whatsoever. Nor was any information about ingredients available online. The fact that Sample #7 provided extremely small packets of powder, each of which is meant as one application, suggests a high likelihood of the product containing oxidative dyes. The product is reminiscent of many small, concentrated powdered hair dyes which contain PPD which are sometimes used to create “black henna.” These powders have little to no scent. A true henna product requires at least 100 grams of powder to color collar-length hair of average thickness. It is meant to be made into a thick paste, rather than a thin, paint-like liquid.

This is an example of a powdered PPD-based hair dye. Very little powder is necessary for a complete application because the dye is concentrated. 

Sample #8 reported PPD and 2 Nitro, a derivative of PPD, on its ingredients list. However, the results of the chromatography tests yielded deep orange results. PPD alone results in a deep, violet-black stain depending on the concentration. This product appears to have a lower concentration of PPD (this does not mean it is safe!) and another dye which is not reported. The ingredients list includes the phrase “other natural herbs.” It is possible that one of the “other natural herbs” is responsible for the orange color. However, it is more likely that the product includes a synthetic dye, possibly an azo dye or a concentrate food coloring, to bring about this result.

Sample #2 showed some faint, green-blue vertical streaks in the 99% alcohol condition. In the 1:1 alcohol/water condition, the same color can be seen at the solvent front. This result different from the blue-green tones of indigo. Unlike indigo, it did not oxidize to a deeper blue-violet tone over time. Additionally, the dye appeared in streaks rather than as a consistent stain. Sample #2 did not report indigo in its ingredients list. It is likely that this sample included a synthetic dye meant to alter the color of the powder itself. A similar effect appeared in Part One of this series.

In all, samples #1-6 showed visually similar results with some variation. They were visually comparable to the ASRT sample and 2:1 ARZI/ASRT samples. Sample #2 showed some blue-green streaks which suggest an added synthetic dye. Sample #7 yielded a very dark brown result which suggests the presence of PPD. Sample #8 yielded a vivid orange result which is very likely due to an added synthetic dye.

Limitations and Considerations

The purpose of this article was to compare a number of products labeled and sold as “henna for hair” products which claim to color hair brunette or brown. It is important to note that the results of the paper chromatography tests are in no way meant to indicate the color result of using any of these products on hair. Paper and hair do not dye the same way, nor was the purpose of this article to demonstrate hair color results.

The hope was that the results of the paper chromatography tests would show distinct color bands which could be compared to Ancient Sunrise henna and indigo results to determine the presence of lawsone and indigo dyes. However, very few results showed distinct dye bands. Future tests should consider new solvent conditions which may show clearer results. Tests using more advanced chromatography methods would be able to separate and identify dyes more successfully.

As noted earlier, the paper strips used for the chromatography tests varied in density. This caused the solvent to move more quickly and higher up the strip in some tests, and more slowly in others. This was an unforeseen factor caused by inconsistent manufacturing. Future tests should make sure to use high quality paper strips which are reliably consistent.

The results of the chromatography tests changed in color as the paper strips dried and as the dyes oxidized. Some dyes oxidized more than others while some colors faded rather than darkened. Because there was no way to test all samples at the exact same time, each paper strip was at a different stage of oxidation when all samples were completed. While photos of each sample was taken just after removal from the processing tank, variation in lighting and camera settings made it difficult to visually compare results. Future studies should take into consideration camera and lighting control.

The final step in this exploration of premixed “henna for hair” products would be to investigate a number of products marketed for coloring hair black. No doubt many products labeled as henna in this category will contain PPD. In some cases, “black henna” sold for both hair and skin is simply a highly concentrated PPD product with little to no henna content. Future investigations should follow the same or similar procedures as Part One and Two of this series to investigate such “black henna” products.

Does it Dye Hair? The Official List

People have been using plants and other materials to change the color of their hair long before commercial hair dyes were invented. The resurgence in natural and DIY beauty has led to a long and strange list of ingredients being mixed up and put on the hair. Many of these are food items. Others are borrowed from natural fabric dyeing. However, just because something is natural and has a color does not mean that it will 1) bind permanently to the hair strand, and/or 2) be safe to use on the hair.

              Many plants which will dye fabric require simmering and/or being set with a mordant. Because one should not do either with the hair, it will not work the same way. Most foods are, well, best used as foods. Eat them, and you get nutrients and a happy tummy. Put them on your head, and you get a lot of food rinsed down the drain for very little effect.

              There are very, very few dyes that are capable of binding to the hair in a permanent manner. Out of these, there are fewer which are safe (Hint: if it is effective and safe, we probably sell it at Mehandi.com). At a molecular level, a dye needs a small enough molecule or a chemical reaction to break past the keratin layers on the surface of the hair strand, and then oxidize into a larger molecule that cannot easily escape back out of the hair, binding it there permanently. This is what oxidative (store-bought) dyes do.

Dyes like henna and cassia bind to the hair via a Michael addition, facilitated by the low pH environment of the paste. Despite having beautiful, vivid colors, most plants cannot dye the hair because the molecule is too large. Without simmering for long periods of time or the use of a mordant to chemically bind the dye, the color simply sits atop the hair and will wash right out.

              Below is a list, in alphabetical order, of the many things people attempt to use, either mixed into a henna treatment or on its own. Each item will be examined for the following questions: 1) Does it affect hair color? 2) Is the color change permanent? 3) Is it safe? Additionally, most will include explanations for how the ingredient came to exist in hair recipes if it is not safe or effective.

Amla

              Amla does not contain a dye. When used to dye-release henna, it affects the resulting color of the henna by muting brighter tones. It assists a successful indigo bind by temporarily loosening the hydrogen bonds in the hair, allowing more dye to enter. Real amla is safe. If an amla product claims to change the color of the hair, it may contain other ingredients, and may not be safe.

Beets

              Beets will stain your hands, change the color of your urine, and can dye fabric when simmered and used with a mordant. Because you do not want to simmer and use mordants on your hair, you cannot achieve a permanent stain using beets. It is safe but will do nothing for your hair.

Black Tea

              Many natural hair blogs claim that strong black tea will darken your hair. If it does, the result will be very subtle, and very temporary. Some people use black tea as their acidic liquid for henna, but it is generally not quite acidic enough for a good dye release. A strong brew of black tea may cause caffeine jitters when absorbed through the scalp. Relatively safe; not effective for hair coloring.

Blueberry

              On its own, blueberries or blueberry juice will not create a noticeable change in your hair color. Added to henna as a dye-releasing liquid, the anthocyanins in blueberry juice will add a subtle ash tone to the color to cool it. This effect may fade over time. It is safe, but subtle and not permanent. Ancient Sunrise® Nightfall Rose fruit acid powder is made from powdered purple aronia fruit, which is like a hardcore version of the blueberry.

Buxus (Katam)

              Buxus is mixed with henna in the same way that indigo is, to create soft brunette tones. It is safe. Here’s the problem: Buxus was produced in Yemen, which is under civil conflict. There are few if any producers of buxus left, and Yemen is not exporting goods to the US at this time. If you find anyone claiming to sell buxus, it is most likely a mixture of henna and indigo or some other type of counterfeit.

Calendula

              Calendula is a bright yellow flower. It is used as a natural fabric and food dye. It is sometimes used to give a golden tone to cheese and butter. Calendula will show up in an internet search for natural ways to dye your hair. Like so many other items on this list, calendula’s dye will not break into and bind to the keratin cuticle of your hair without the use of heat and mordants.

Carrot

              Carrot juice is delicious. Carrots are a good way to make friends with rabbits or horses. Despite their bright orange color, soaking your hair in carrot juice will not do much. Safe, but better eaten. Any color result that may occur will wash out.

Cassia

              Hooray! The first effective contestant on the list. Cassia Auriculata will dye light hair a golden wheat color. It provides similar benefits as henna. Not quite as strong or permanent as henna, cassia may need to be applied more often, or mixed with a small amount of henna for a more effective bind. Cassia is great for diluting henna or henna/indigo mixes to great vibrant fiery reds, or lighter browns. On dark hair, cassia will not cause a color change but is great for conditioning. Cassia is very safe.

Chamomile

              Chamomile shows up in natural beauty sites very often because it is supposed to naturally lighten hair. The instructions usually involve soaking hair in chamomile tea or spritzing the hair with tea in a spray bottle. Like lemon, some use it in their hair prior to going out into the sun. Chamomile seems to deliver very subtle, very slow results that appear if one’s hair is already blonde or light brown. If your hair is dark, no luck. If your hair is dyed with henna, chamomile will not remove the henna. With hair that is already light brown or blonde, it would take weeks of daily hair-soaking and dozens of tea bags to achieve a noticeable difference if any at all. Chamomile is not a strong enough acid to use for dye-releasing henna. It is safe, but drinking chamomile tea may make you sleepy.

Cherry

              Many people long to have hair the same color as black cherries. That deep, purple-red is gorgeous, and sadly, only achievable with chemical dyes. Cherry juice might be a good contestant for dye-release liquid, but because of its antioxidant and anthocyanin content, not because of its color. Cherries are safe, as long as you are not allergic, and remember to spit out the pits.

Cinnamon

              Cinnamon is another common ingredient in natural beauty recipes for lightening hair. It smells wonderful, but cinnamon is irritating to the skin. I once tried the cinnamon-and-honey hair mask out of curiosity, and it felt like I rubbed tiger balm all over my scalp. Like lemon, honey, and chamomile, if there is any effect at all, it would show up on hair that is already light, require several treatments, and be very subtle. Not entirely safe, and not very effective. Will do nothing to the color result of a henna mix. If you want to make your henna mix smell nice, try ginger or cardamom powder instead.

Coffee

              This is one of the most common items people ask about. Some henna sites still recommend mixing henna with strongly brewed black coffee. Coffee seems to temporarily darken the hair, but caffeine is transdermal and will cause jitters and headaches if you leave it on your scalp for several hours. You will also have to put up with the smell. Imagine breathing through a used coffee filter for three hours. A coffee “rinse” would do nothing. Do not put coffee in your mix. If you want to darken your henna, add a little indigo.

Dandelion

              Bright yellow flower. Fun for making wishes. Used in salads. See Calendula above.

Henna

Pure, BAQ henna is safe, effective, and permanent. But if you are reading this blog, you might know that by now. Feel free to read the other articles to learn all about how to use it. Henna allergies are extremely rare. Henna’s dye molecule binds to keratin and will not fade. Because henna is not well regulated, all henna is not equal. Make sure you know the difference between true henna and compound henna, which is unsafe and contains a number of additives.

Honey

              Honey produces small amounts of peroxide, which can bring out some highlights to hair that is already light. The effect is minimal. It will not do anything to dark hair. Do not add it to a henna mix; it will inhibit dye uptake. It is safe unless you are an infant, or allergic to honey. Honey is great with some peanut butter on toast. It is also nice in tea. In your hair, it is a sticky mess that won’t do much.

Indigo

Used in conjunction with henna, indigo creates permanent shades of brunette. On its own, it may dye lighter hair a gray-blue color, which may fade. Henna helps indigo bind permanently. It is safe. Some with mold allergies notice a reaction to indigo. Patch test beforehand if concerned, and avoid inhaling powder particles. Read more about indigo here.

Jagua

              Jagua is derived from the fruit, Genipa americana which grows in South America. Its juice has been used in body art to create deep blue stains on the skin. Jagua is extremely expensive. The amount of jagua juice needed to mix with 100g of henna powder would be over a hundred dollars. Not worth it. Jagua is also known to cause allergies in those who are allergic to certain fruits. Some distributors may sell products containing PPD claiming it is pure jagua. Verdict: Not for hair, expensive, and proceed with caution.

Kool-Aid

              Dyeing hair with powdered drink mixes is popular among young people because it is cheap, temporary, and can result in unnatural colors. The high concentration of food dyes can cause a temporary stain on lighter hair. It is relatively safe, but not permanent, and not necessarily “natural.” It will probably stain your clothes and pillowcase as it fades off. Adding it to henna would probably not do anything, as the lawsone would greatly overpower any food dye.

Lemon

              Lemon juice has been used to add highlights to blond hair. It works similarly to peroxide. You will not see much change in darker hair. It will not lighten hair that has been dyed with henna. When used as an acid in a henna mix, the low pH will actually cause the resulting stain to oxidize greatly over time, causing a darker color. Those who are sensitive to citrus may notice an itchy, bumpy, or red scalp when using henna mixed with lemon juice. It can also cause UV sensitivity. When used with henna, it is smart to dilute lemon juice with 3-4 parts distilled water.

Hibiscus

              This is another plant that is popular in natural beauty blogs. Hibiscus is a beautiful red flower with a sweet, tart flavor. The flowers are dried and sold whole and in powder form. According to those who recommend using it, hibiscus supposedly brings red hues to the hair. If effective, the result would be very temporary. Hibiscus is high in anthocyanins, so if there is any effect of it being mixed with henna, it would act more like Ancient Sunrise® Nightfall Rose fruit acid powder, or blueberry juice, cooling the henna color rather than adding red tones. Hibiscus makes for a delicious cold summer drink. Save it for that, instead.

Iron (rust)

              Some cultures have mixed henna in iron containers, and this recommendation has come through to blogs and natural sites today. Some sites recommend adding a few rusty nails (or any rusty iron item) into the henna if you do not have an iron pot. A low-pH liquid would react with the iron to create iron oxide, which may impart a dark color to the hair temporarily. You do not want minerals in your hair. Not only does mineral buildup inhibit dye uptake, but can cause the hair to become stiff and dry. This is why we recommend clarifying the hair before applying henna and using distilled water.

              Note: This is not to say that henna and metal should never mix. Henna can be mixed in stainless steel bowls, or with any run-of-the-mill spoon just fine.

Nettle

              Nettle has been recommended on some natural beauty sites claiming it will darken hair and stimulate growth. It can dye fabrics but requires simmering and mordants to do so. There will be little to no effect on hair. There are no studies that show significant effects on hair growth. While nettle can be eaten, or used for tea, harvesting nettle from the great outdoors can result in some nasty stings. 

Onion

              This is another one pulled from fabric dyeing. Onion skins can dye fabrics a lovely yellow color. It will not work on hair. Some claim that rinsing hair in water that has been boiled with onion or onion skin will promote hair growth. This claim has not been proven. Do yourself and others a favor, and do not put onions in your henna, or in your hair at all. You will end up smelling like onions for no reason.

Pomegranate

              Pomegranates have an absolutely beautiful color, and anyone who has opened one will know that the juice can stain your skin, clothes, and cutting board. It will not stay in your hair. There’s nothing wrong with using it as your dye-release liquid, other than expense. It is high in anthocyanins, so it would most likely work similarly to blueberry juice.

Raspberry

              See: Blueberry, Cherry, and Pomegranate. Safe, and decent for a dye-release liquid; will not dye hair.

Red Cabbage

              You may have done the experiment in science class where you use cabbage juice as a pH indicator. If not, it’s pretty cool. The purple liquid turns shades of pink when mixed with an acid, and blue to green when mixed with a base. Fabric dyers can use this to their advantage to create a variety of shades. I feel like a broken record by now but guess what. Works with simmering and a mordant; won’t work on hair.

Rhubarb

              Rhubarb supposedly adds a golden tone to light hair. It is recommended on natural beauty sites and is sometimes included in “herbal” or “natural” hair dye mixes. Despite its pretty, red stalks, rhubarb will not add red tones to the hair. It contains chrysophanic acid, the same molecule responsible for cassia’s golden results. However, rhubarb root creates a very vivid, unnatural yellow that isn’t generally desired as a hair color. In addition, the dye does not bind well and fades over time. Better saved for fabric dyeing and pies.

Rosemary

              Rosemary oil has long been recommended and used for hair growth and darkening hair. After scouring research databases, I found one clinical study which showed the effectiveness of rosemary oil against androgenetic alopecia, and none on hair darkening. Because only the abstract was available I could not make a determination on the soundness of the study. The claimed hair-growth effect is due to rosemary’s rubefacient quality. Rubefacients are by their nature, irritants. They stimulate circulation (redness) in the skin by dilating blood vessels. Do not put essential oils in henna. They dull the resulting color and can cause headaches.

Saffron

              Holy expense. Not only will it fail to alter your hair color, but a gram of real saffron can cost up to $25. It is the most expensive spice in the world, and counterfeit/adulterated saffron is common. Saffron rice is delicious. If you get your hands on some real saffron, make rice. Safe, expensive, and pointless for hair.

Sage

              Similar claims as Rosemary. Just like Rosemary, there is no definitive proof of sage’s ability to dye hair. Pretty safe. Good for clearing your home of ghouls and ghosties, or bad smells. Not effective for coloring hair.

Para-phenylenediamine (PPD)

              NOT SAFE. Para-phenylenediamine is the active ingredient in most commercial hair dyes and is highly sensitizing. Yes, it effectively colors hair. It is also known to cause serious allergic reactions. Sensitivity to PPD is increasing due to the popularity of “black henna” tattoos, which use a concentrated form of dye. As a coal tar derivative, it is not natural. Read more about it here, here, here, and here.

Most commercial hair dyes contain PPD. Even products labeled “natural” or claiming to be henna can have PPD.

Tomato

              If you’ve ever spilled pasta sauce or ketchup on your clothes, you were probably quite happy to find that the stain did not stay permanently. Soaking your hair in tomato juice is not an effective way to dye your hair, and like many other items on this list, any color result obtained will wash out. Tomatoes are acidic, so I can’t think of anything wrong with using tomato juice as a dye-release liquid, other than the fact that it would smell very strange. Better idea: enjoy a Bloody Mary while the henna is in your hair.

Turmeric

              Turmeric gives curry dishes their bright yellow color. It is used in fabric dyeing. When mixed with an alkaline solution, turmeric’s ochre yellow color turns vivid red. When turmeric paste is rubbed onto the skin, it will leave a yellow stain. Turmeric may temporarily stain light hair yellow but will wash out quickly. Be prepared to turn your tub and towels yellow. Safe; beautiful color; will not dye hair.

Turmeric was used to stain the skin yellow in this body art piece. It will fade away after a good scrub.

Walnut

              Black walnut powder has been sold on its own and in pre-mixed henna powders. It leads to darker results. Black walnut will dye hair but has a high risk of allergic reaction. Indigo will work just as well, if not better. Somewhat effective, but not as safe.

Woad

Mehandi.com no longer carries indigo for body art due to it being hard to resource.

              Woad is one of the most ancient dyes, used to dye fabrics “Celtic blue.”  It is speculated that the Celts also used it on their skin, as seen in the movie Braveheart. The process is extremely smelly, like rotten cabbages. The dye molecule, indigo, in woad is the same as it is in the indigo (indigofera tinctoria) plant. Just use indigo plant powder. It is easier to get your hands on and doesn’t have the stink. If you want to paint yourself blue.

Ancient Blue® is an indigo product that mimics the use of woad on the skin, without the cabbage stink.

Final Notes

All in all, it is best to keep a henna mix to its bare essentials and to keep food for eating purposes. Many foods do have nutrients that are beneficial for hair and skin, but in order to take advantage of them, you need to process them through your digestive system. Additionally, if you don’t already have these items laying around, going out and finding them only complicates and adds expense to your henna method, for no real pay-off.

              Please don’t hesitate to contact  Ancient Sunrise® Customer Service if you have any additional questions. If there is an item you’d like to see added to this list, please comment below.

Author: Rebecca Chou 2/23/18
Edited: Maria Moore 11/16/22

Henna for Hair 101: Don’t Put Food On Your Head

Well… you can if you really want to, but please keep it out of your henna.

If you’ve surfed around the internet looking for information on dyeing hair with henna, chances are that you’ve found dozens of articles and videos on how to create a henna mix for your hair, and many of them have told you to add any of a variety of things into the mix. How do you decide which to use? Should you add coffee? Should you add coconut milk? Eggs? Spices? Oils? Yogurt? Beet juice? The answer is no. And here’s why we say don’t put food on your head.

The obsession with using foods and other ingredients in henna mixes comes from a few myths:

First, there is the idea that henna is drying to the hair, and that some ingredients can prevent that. Henna does not ‘dry out’ hair, though it does raise the cuticle temporarily.  Conditioner or a vinegar rinse will smooth it right back down. 

Second is the idea that dark colored ingredients such as coffee or cinnamon will make your color darker, or bright red/purple ingredients such as beets or paprika will add those hues to your color. Beets and carrots may change the color of your bowel movements, but they won’t change the color of your hair.

Third is that spices and oils with strong scents will mask the smell of the plant dye powders and make your hair smell better.

Fourth is that the cosmetic industry puts pictures of fruit and herbs on their packaging to ‘greenwash’ the fact that their products are mostly chemicals.  This gives people the impression that adding random ‘natural’ and ‘exotic’ things makes products better.  It’s more complicated than that.

Because of all the misinformation floating around the internet, people get the idea that adding a bunch of extra ingredients into their henna mix will result in a super powerful, awesome conditioner/cleaner/dye paste worthy of the gods. It’s an attractive idea because you have these items in your kitchen already, and certain foods do have beneficial properties for hair and skin.

Spoiler alert: You’ll just end up with a lot of wasted food, and less of the benefits of henna….so say with me: don’t put food on your head.

Here’s the Truth:

Henna is not drying, nor damaging.

Some notice that after rinsing their henna paste out, their hair feels crunchy, tangled, or dry. This is due to the temporary change of the hair structure after dyeing with henna. When the dye molecules migrate into the hair, the cuticle is raised up, making the hair seem rougher and coarser. As the dye molecules settle down into place, your hair becomes smoother again. This can take a couple of days, but you can help to smooth the cuticles back down by using conditioner, rinsing with cool water, and rinsing with apple cider vinegar.

Layers of keratin scales form the outer surface of the hair fiber. These cuticles are temporarily raised during dyeing, and settle back down afterward.

If your hair feels gritty after henna, you may not have rinsed it all out. The easiest way to get all of that paste out is to fill your tub with warm water, and lay back, swishing your hair around. Massage a good handful of conditioner into your hair, rinse, and repeat until it feels soft. Contrary to popular thought, there is nothing keeping you from using shampoo, conditioner, or any other hair product right away. There is a myth that shampooing after henna causes the dye to fade; this isn’t the case. The dye binds to the hair during the three to four hours the paste is left on the head, and it is there to stay. Any color that tints the water going down your drain was residual dye.

The myth of henna being damaging to the hair comes from compound hennas, which are not pure henna. These are mixes that contain henna as well as other ingredients such as metallic salts, PPD, and other chemical additives. Compound henna is damaging to the hair, but pure henna plant powder is not. 

As long as you are using 100% pure plant powder, adding coconut milk, oils, conditioner, honey, yogurt, egg or any other products to “moisturize” the hair is not necessary, and will prevent the dye from staining your hair.

            Read Why Hair Feels Dry After Henna and How to Fix It for more about this topic.

Good quality henna is easy to rinse out.

Another reason so many recipes have you digging around in your refrigerator is because much of the henna sold for hair is poorly sifted, full of leaf bits, twigs, sand, and other undesirably chunky bits. Adding oils, milks, fats, and other slippery ingredients are supposed to create a smoother henna paste that’s easier to apply and rinse out.  In reality, oils coat the hair and prevent the henna dye molecules from effectively binding to the hair. Imagine dipping some fabric into oil, and then trying to dye it. The result would not be so great.

It’s easier to start out with high quality, finely sifted henna.  That way, picking twigs out of your hair won’t be part of your henna routine.

Just because it’s brightly colored doesn’t mean it’ll dye your hair.

Beet juice, paprika, hibiscus, red cabbage juice, and any other number of bright red/purple ingredients will not make your resulting hair color redder or more burgundy.

Coffee will not make your hair darker or browner. But it will smell very strong and give you a headache. Caffeine is transdermal. It will enter your body through your skin, giving you some crazy jitters. Black tea, just like coffee, won’t change the color, no matter how strong you brew it.

These ingredients do not contain dyes that permanently change the color of your hair. In order to do that, a dye molecule needs to be able to bind into the keratin on your hair. When henna powder is mixed with an acidic liquid, the dye molecules become available in a form that can attach permanently to keratin. This process does not work with every substance. To check if an ingredient is capable of dyeing hair, read Does it Dye Hair? The Official List.

Some of these ideas come from techniques for fabric dyeing; people wrongly assume that if a plant or spice can dye fabric or wool, it will do the same thing on the hair. Dyeing fabrics with plants usually involve boiling the fabric and using a mordant, neither of which you’ll want to do with your hair.

If you want a brighter red, certain fruit acids will push the henna tone lighter, and prevent deepening from oxidation. Mixing henna and cassia will also result in lighter coppers and oranges.

If you want browner tones, add indigo. Fruit acids can also deepen your result. Amla mutes down the brighter orange tones. Nightfall Rose adds subtle ash tones.

Good Smells

            Some people love the smell of henna, and others think it smells like wet dog or iron rust. For those who don’t like the smell, there are two things that can neutralize and mask it: ginger powder and cardamom powder. Ginger neutralizes, and cardamom adds a spicy sweet scent. Do not use cinnamon or clove, as they irritate the skin.

Many henna recipes recommend dye-releasing henna with herbal tea. Herbal tea, on its own, is not acidic enough to dye-release henna. There isn’t an issue with adding this as long as you have some other acidic component.

Essential oils can cause headaches and irritate the skin. Keep in mind that anything that is in your henna mix will be sitting on your scalp for several hours. And again, oils create a barrier against the dye. So resist the urge to dig into your stash of EOs when mixing up your henna. That stuff is pricy. Save it for other things.

“But it’s so natural and healthy!”

Healthy and natural lifestyles are on the rise. Throughout the internet, you see endless articles containing homemade face mask recipes that look more like recipes for something you might feed a baby (banana, oatmeal, avocado, egg…) and these ingredients end up on hair masks, as well. And then in henna mixes.

There’s nothing wrong with that, and sure, some food items are beneficial on the skin and in the hair. But henna on its own is strengthening and conditioning. Adding a bunch of other things prevents you from getting the full effect of the benefits of henna, not to mention causing a weaker stain. In the end, instead of creating some kind of super henna, you’ll end up having a weird smoothie that happens to also have henna in it.

Rule of thumb: A hair mask is a hair mask. Henna is henna. Both do their own special things for the hair, but keep them separate. If you really want to, wait until after you rinse your henna out, and then condition your hair with the contents of your kitchen. Or use those items to make lunch, instead.

If you only want conditioning benefits, Cassia would be a better choice than henna. You get the same conditioning benefits, without the color change. Remember to keep your cassia mix simple, too.

So what CAN you put in your henna?

Simple, clear, mildly acidic fruit juices: lemon juice, apple juice, vinegar, cranberry juice

Very little. The simplest mix is often the best.

You will need something acidic to dye-release the henna and/or cassia. This can be a fruit acid powder, or fruit juice.

If you…

•don’t like the smell of henna, add a teaspoon of ginger or cardamom powder. 

• are using indigo, a teaspoon of regular table salt for every 100g of indigo can help strengthen the dye.

• don’t like the smell of indigo, a spoonful or two of instant vanilla pudding powder will neutralize the smell.

To make indigo paste creamier and easier to apply, add a teaspoon of Ancient Sunrise® CMC powder.

And that’s it. That is why one of our most popular phrases at Mehandi is don’t put food on your head.

To learn more, read the Ancient Sunrise® Henna for Hair E-Book, and feel free to contact the Customer Service Representatives at www.Mehandi.com.