Indigo-Free Collection
Herbal Color,
Without Indigo
“I want to color my hair with plants, but I was told I react to indigo.” That message is why this collection exists. Indigo is in most herbal hair color because it is the plant that makes brown and black possible. Six of our twenty-four shades contain none of it.
They are made from certified organic plants and nothing else. Not plant-enriched, not plant-inspired—the whole ingredient list is leaves, roots, flowers and seeds, grown organically and audited by independent certifiers. Every plant in every shade is named on its product page and printed on the pack.
Two things before you choose. Leaving indigo out leaves a warm range — blonde through to wine red, and nothing darker or cooler, because indigo is the only cool pigment plant colour has. And the allergen most often behind hair dye reactions is not a plant at all. We have set out what has actually been measured further down this page, with sources, so you can check it or take it to a doctor.
Six shades Tap one to see it on hair
Independently Certified
Tap any certification to see what it actually checks
Before you choose
If you reacted to a plant hair colour, it may not have been the indigo.
This is the part we would rather say before selling you anything. People arrive on this page because something went wrong, and often because someone told them indigo was the cause. Sometimes it is. But the evidence around hair dye allergy points somewhere else first, and it is worth knowing where.
| PPD para-phenylenediamine | Natural indigo Indigofera tinctoria | |
|---|---|---|
| In the standard patch test series | Yes, for decades | No |
| Prevalence in the general population | 0.8%1Five European countries, 2,739 people patch tested | No published figure3Because it is not routinely tested |
| Among dermatitis patients who were patch tested | ~4% in Europe2ESSCA network, 12 European countries | Case reports only3Published 2020 and 2025 |
| Named Allergen of the Year | 2006, by the American Contact Dermatitis Society | — |
The number that explains the confusion
In that same European study, people who had ever had a “black henna” temporary tattoo tested positive for PPD at 3.2 per cent, against 0.6 per cent in people who had not — adjusted odds of 9.33 to one.1
Black henna is not henna. It is henna with PPD added to make it stain black quickly. The same substitution happens in powders sold as indigo: if something labelled indigo turns hair black in under an hour with no henna step, a synthetic dye is doing the work. A person who reacts to that product has reacted to PPD, and may reasonably conclude that plant colour is the problem.
And the part that cuts the other way
We are not going to tell you indigo is harmless. The absence of a prevalence figure is not evidence of absence — substances that sit outside the standard patch test series are known to be under-recognised, precisely because nobody is looking for them systematically. Contact dermatitis to pure Indigofera tinctoria has been documented in the dermatological literature, and those cases are real.3
There is also a published case of a person allergic to PPD who went on to react to pure henna, black tea and pure indigo powder as substitutes.4 Avoiding one ingredient does not guarantee you will tolerate the next one.
So here is what we will and will not say
- We will tell you what is in the pouch. Six of our twenty-four shades contain no indigo. The full ingredient list for every shade is on its product page and printed on the pack.
- We will not tell you they are safe for you. Removing indigo does not make a product hypoallergenic. Every one of the six contains other plants, and any plant can sensitise someone.
- If you have reacted to a hair dye before, see a dermatologist for professional patch testing before you use any plant colour, ours included. That testing will tell you what you actually react to, which is information no product page can give you.
- Patch test 48 hours before every application, even after that, and even if previous applications were fine. Sensitisation can develop with repeated exposure.
If You React to Indigo
What indigo-free can do—and what it honestly cannot.
Indigo is the only blue pigment in herbal color, and the only plant that makes it dark. Leaving it out opens a real range, and closes another. Better to know both before you choose.
Six shades, blonde through to deep red
All built on henna and warm-pigmented plants, with no indigo at any stage.
- Beige Blonde — the most neutral of the six.
- Champagne Blonde — light with a fine golden shimmer.
- Sun Blonde — bright gold, and the one shade with no henna at all.
- Caramel Blonde — the deepest blonde, on the border of light brown.
- Strawberry Blonde — blonde carrying a clear red warmth.
- Wine Red — the deepest shade open to you here.
What indigo was doing in the other shades
Every one of these limits comes from the same fact: indigo is the plant that darkens and cools plant color, and it is the one being left out.
- No black or dark brown. Henna cannot reach those depths on its own—indigo is what turns its red into brown and black.
- No ash or cool tones. Indigo is the only cool pigment available in plant color.
- Gray coverage reads warm. On white strands these shades develop golden to coppery rather than neutral.
This is the honest trade. If a warm result is not what you want, indigo-free herbal color may not be the right route—and we would rather say so here than let you find out afterwards.
Please patch test, every time. If you have reacted to a hair color before, do a skin patch test 48 hours ahead—even with a product you have used previously, and even though there is no indigo in these six. We can tell you exactly which plants are in the pouch; we cannot tell you how your skin will respond to them. If you have a diagnosed allergy, or have been told to avoid chemical hair dye for a medical reason, please speak to your doctor or dermatologist before using any hair color, including this one.
Natural vs. Certified Organic
Same word on the shelf. Very different rules behind it.
Both labels sound like the same promise. Only one of them has to be proven to someone other than the brand making the claim—which matters more than usual when an ingredient list is something you need to trust.
“Natural” on a hair color box
There is no legal definition of “natural” in cosmetics in the US or the EU, so the claim is left to the brand.
- No minimum plant content. A product can be mostly synthetic and still use the word.
- Synthetic dyes may still be inside. PPD and its relatives, such as PTD, are found in products marketed as natural or herbal.
- Ammonia and peroxide are not ruled out. Nothing about the word excludes them.
- Nobody has to check. No audit, no inspection, no farm-level traceability.
This isn’t an accusation against any particular brand—it’s simply what the word does and doesn’t guarantee. Which is why the ingredient list matters more than the front of the box.
COSMOS ORGANIC, audited by ECOCERT
The strictest organic standard written specifically for cosmetics—and the one Radico has held since 2012.
- Certified organic plants, start to finish. The farms, the supply chain and the finished pouch are all inside the standard.
- No PPD, no PTD, no synthetic dye of any kind.
- No ammonia, no peroxide, no resorcinol, no synthetic preservatives or fragrance.
- Verified by outside auditors, not by our own marketing team.
In 2012 Radico became the world’s first hair color brand to earn COSMOS ORGANIC, and we have held it through every annual audit since.
Indigo-Free Collection
Indigo-Free Shades
Six fully herbal shades made completely without indigo.
Herbal Color, Indigo-Free
Gentle for Sensitive Scalps
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How It Works
Take indigo out, and henna has nothing to darken it.
Herbal color rests on two plants. One is red, one is blue. Remove the blue one and what remains is warm—which is exactly the range you see here.
Henna Leaf
Lawsonia inermis
With no indigo in the blend, henna leads. Its pigment, lawsone, bonds to keratin and is warm by nature—which is why this whole collection runs warm. In five of the six.
Manjistha Root
Rubia cordifolia
A red-pigmented Ayurvedic root, carrying purpurin. It deepens Champagne Blonde and Wine Red without any need for indigo.
Hibiscus Flower
Hibiscus rosa-sinensis
Its anthocyanins carry a plum cast that bonds to keratin—the violet dimension that keeps a red from reading as plain copper.
Turmeric Root
Curcuma longa
The golden spice doubles as a dye. In Sun Blonde alone—the one shade here built without henna at all.
Every pigment here is warm. Henna is red, manjistha is red, hibiscus is red-violet, turmeric is gold. Indigo is the only cool pigment in plant color, and it is the plant being left out—which is why this collection runs from beige blonde to wine red and stops there.
Colorless Henna
Cassia obovata
A different plant from henna, carrying no red pigment. It dilutes the blend so the lighter shades become possible. On white or very light hair, a long application can leave a faint golden cast.
Amla Fruit
Emblica officinalis
Naturally acidic, and in all six. Amla is the herb that shifts a plant colour cooler, which is why it appears in 23 of our 24 shades.
Reetha Fruit
Sapindus mukorossi
Soapnut, and one of three herbs unique to Sun Blonde. Its saponins are the same compounds that make reetha work as a plant shampoo.
Shikakai
Acacia concinna
Known in Ayurveda as fruit for the hair, and naturally acidic. Used in Sun Blonde alone — the only shade in the range built without henna or indigo.
Bhringraj
Eclipta alba
Ayurveda calls it Kesharaja, the king of hair. It carries no pigment at all, which is why it can sit in 22 of our 24 shades without touching the colour.
Brahmi
Bacopa monnieri
A scalp herb in Ayurveda rather than a pigment, and colour-neutral like bhringraj. In four of the six here.
Methi Seed
Trigonella foenum-graecum
Fenugreek. Its galactomannan mucilage holds moisture on the strand and helps the pigment hold longer.
Eleven organic herbs, three jobs, and no indigo anywhere. Amla and bhringraj are in all six; henna and colorless henna in five. Sun Blonde is the one recipe with no henna at all, built on turmeric instead — and the only shade in the whole range that contains neither henna nor indigo. Every ingredient is listed exactly as it appears in the pouch, which is the point of a collection like this one.
Questions
Five questions we are asked most about colouring without indigo — answered in full, including the ones where the answer is no.
Is there a natural hair color without indigo?
Yes. Radico’s indigo-free collection is six shades made without indigo (Indigofera tinctoria): Beige Blonde, Champagne Blonde, Caramel Blonde, Strawberry Blonde, Wine Red and Sun Blonde. They are made from certified organic plants and nothing else, and hold COSMOS ORGANIC certification audited by ECOCERT.
Which shades can I use if I react to indigo?
Those six contain no indigo at any stage. They run from a neutral beige blonde through to a deep wine red.
We are not going to tell you they are safe for you. Removing indigo does not make a product hypoallergenic, and every one of the six contains other plants. If you have reacted to a hair colour before, see a dermatologist for professional patch testing before you use any plant colour, ours included — and patch test 48 hours before every application after that.
Was it really the indigo I reacted to?
Possibly, but the evidence points elsewhere first. PPD contact allergy affects about 0.8 per cent of the general European population1 and around 4 per cent of dermatitis patients who undergo patch testing.2 Natural indigo is not in the standard patch test series, so no comparable figure exists — only case reports.3
In the same European study, people who had ever had a “black henna” tattoo tested positive for PPD at 3.2 per cent against 0.6 per cent in those who had not, with adjusted odds of 9.33 to one.1 Black henna is henna with PPD added. The same substitution occurs in powders sold as indigo.
That said, the absence of a figure is not evidence of absence. Allergic contact dermatitis to pure indigo is documented,3 and there is a published case of a PPD-allergic patient reacting to pure henna, black tea and pure indigo used as substitutes.4 Only professional patch testing can tell you what you actually react to.
Can indigo-free plant hair color give a brown or black result?
No. Indigo is the plant that turns henna’s red into brown and black, and it is also the only cool pigment available in plant colour. Without it the achievable range is warm: blonde, gold, copper and red, with wine red as the deepest result. Gray and white strands will develop golden to coppery rather than neutral.
What is the difference between natural hair color and organic hair color?
“Natural” is an unregulated marketing term. A hair colour can carry it while still containing synthetic dyes such as PPD or PTD, ammonia or peroxide, and no third party has to verify the claim.
“Certified organic” under COSMOS ORGANIC is an audited standard. It requires organically farmed ingredients and prohibits synthetic dyes, ammonia, peroxide, resorcinol, synthetic preservatives and synthetic fragrance — and it is checked by outside auditors every year.
Sources
The figures on this page come from peer-reviewed dermatology and epidemiology literature. They are listed here so you can look them up, or take them to a doctor.
- Diepgen TL, Naldi L, Bruze M, Cazzaniga S, Schuttelaar ML, Elsner P, Gonçalo M, Ofenloch R, Svensson Å. Prevalence of contact allergy to p-phenylenediamine in the European general population. J Invest Dermatol. 2016 Feb;136(2):409–415. Cross-sectional study across five European countries. 10,425 people interviewed; a random sample of 2,739 patch tested. PPD contact allergy prevalence 0.8% (95% CI 0.6–1.0). Clinically relevant reactions related to hair colouring 0.1% (95% CI 0.0–0.2). Among people who had ever had a “black henna” temporary tattoo, 3.2% versus 0.6% in those who had not; age- and gender-adjusted odds ratio 9.33 (95% CI 3.45–25.26). PubMed 26802237 → doi:10.1016/j.jid.2015.10.064 →
- Schuttelaar ML, Vogel TA, Rui F, Krécisz B, Chomiczewska-Skora D, Kieć-Świerczyńska M, Uter W, Larese Filon F. ESSCA results with the baseline series, 2002–2012: p-phenylenediamine. Contact Dermatitis. 2016 Sep;75(3):165–172. European Surveillance System on Contact Allergies network, 12 European countries. Overall prevalence of PPD sensitisation approximately 4% among patch-tested dermatitis patients. PubMed 27199097 → doi:10.1111/cod.12583 →
- Voller LM, Elliott JF, Suzuki K, Reiz B, Neeley AB. Allergic contact dermatitis to natural indigo hair dye. Contact Dermatitis. 2020 Sep;83(3):222–224. Case report of allergic contact dermatitis to pure indigo powder used as hair dye. Contact allergy to Indigofera tinctoria is documented, but indigo is not included in the standard baseline patch test series, so no population prevalence figure exists. PubMed 32297334 → doi:10.1111/cod.13553 →
- Swan BC, Tam MM, Higgins CL, Nixon RL. Allergic contact dermatitis to substitute hair dyes in a patient allergic to para-phenylenediamine: pure henna, black tea and indigo powder. Australas J Dermatol. 2016;57(3):219–221. A patient allergic to PPD who subsequently reacted to pure henna, black tea and pure indigo powder used as substitutes. Avoiding one ingredient does not guarantee tolerance of another.
Radico hair colour is a cosmetic product. Nothing on this page is medical advice, and none of it is a substitute for a diagnosis or for advice from your own doctor. If you have been told to avoid chemical hair dye for a medical reason, please take the full ingredient list for the shade you are considering to the clinician who told you.
Avoiding henna as well? See the six shades without henna → Sun Blonde is the only one of the twenty-four that contains neither.
No indigo. Certified organic. And a straight answer about what this range can and cannot do. Six shades below, photographed on real hair under the same light.
See All 24 Shades →The Formula
Every Shade Is a Recipe
There's no dye in the hair powder—only plants. See exactly which herbs create each Indigo-Free shade, and what every one of them does for your hair and scalp.
Every herb here is certified organic. Nothing synthetic, nothing added—the color and the care come from the same plants.
Its Role in This Blend
Hair & Scalp Benefits
100% certified organic
