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Hair Turned Green After Indigo (or Henna)? Why, and How to Fix It
Green after indigo is a colour-balance problem: cool blue without enough warm henna under it. Why it happens, how to correct it with henna, and how to get the shade you wanted next time.
The short answer: green hair after indigo means the cool blue is showing without enough warm henna underneath it. A very fresh result can settle a little as it dries, so give it the first day. If it's still green after that, the fix is henna, added gradually and strand-tested first, not more indigo and definitely not bleach.
Why has my hair turned green after indigo?
Indigo is blue. Blue over a pale base reads green; blue over warm copper reads brown or black. So a green result is a balance problem, and the balance is fixed with warmth.
Three situations bring it on:
There wasn't enough henna underneath
The most common cause on white, grey, blonde or very light hair. Either indigo went on alone, or the henna step was too short, too thin or unevenly applied, so parts of your hair had no warm layer to work with.
The colour hasn't settled yet
Indigo keeps developing after you rinse. A slight cool or greenish cast on the day can ease as the colour settles, so judge it once your hair is dry and has had the first day. What we won't tell you is that a clearly green result will turn black on its own: that one needs correcting.
Your hair is bleached, highlighted or very porous
Porous, lightened sections take plant colour unevenly and hold onto the cool tones, so green shows up more strongly there and lingers. Strand test before any plant colour on bleached hair.
How do I fix green hair after indigo?
- Let it settle. Dry your hair, leave it a day and look at it in daylight rather than bathroom light.
- Don't add more indigo. More cool colour on an already cool result makes the imbalance worse, which is the opposite of what you want.
- Strand test a henna correction. Henna adds the warmth that's missing. Mix it as usual, rest it 3–4 hours, ideally 8, and try it on a few shed or hidden hairs first. Go gradually: too much warmth swings the result towards orange.
- Apply henna to the green areas once the strand test looks right, for at least 2 hours, keeping the paste moist under a cap, then rinse with water.
- Rebuild the dark colour afterwards if you still want it, using the proper sequence: henna first, then a fresh 80:20 indigo to henna step in the same session.
Don't reach for bleach or a colour remover at home. Plant colour doesn't lift out predictably, and stripping it can leave you with a harder problem than a green cast. If you want to go that route, talk to a colourist first and tell them you've used henna and indigo.
Why did my henna turn my hair green?
Henna on its own doesn't go green: it goes copper. When "henna" turns green, it's nearly always a henna and indigo mix with more indigo than a pale base could balance, or a product that isn't pure henna. Check the ingredient list, and check your ratio: 70:30 henna to indigo is the warmest of the brown mixes, 30:70 the coolest.
How do I stop it happening next time?
- On grey, white, blonde or light hair, always give indigo a henna base: one-step for brown, two-step for black.
- For black, let the henna step run its full 2 hours or more before the indigo.
- Choose your brown ratio with the base in mind: more henna for warmth, more indigo for depth.
- Mix indigo fresh with warm water and a pinch of salt, and apply it straight away.
- Strand test whenever you change the ratio, and always on bleached or previously coloured hair.
The methods are in mixing henna and indigo for brown and the two-step method for black.
Frequently Asked Questions
Why is my indigo powder green?
Because that's the colour of the leaf. Green powder is exactly right; it's the blue colour that develops once the paste is mixed and meets the air. The indigo powder page explains how that works.
Will the green wash out?
A little cool cast can ease as the colour settles in the first day. Green that's still there afterwards won't wash out, because plant colour grows out rather than washing away, so it needs a henna correction instead.
Can I bleach over green indigo hair?
Not at home. Plant colour doesn't lift predictably, and you can end up with an uneven result that's harder to put right. Speak to a colourist and tell them exactly what you've used.
How do I get rid of a green tint in brown hair?
Warm it up rather than darkening it. Use more henna in your mix next time, for example 70:30 or 50:50 rather than 30:70, and strand test the shade before you do your whole head.
Why is my scalp green?
Fresh indigo stains skin blue-green on contact, and it fades with ordinary washing over a few days. Petroleum jelly along the hairline and ears before you start keeps most of it off.
