How-to
How to Mix Henna and Indigo for Brown Hair (The One-Step Method)
One paste, one application, three ratios. How to rest the henna, mix the indigo fresh with a pinch of salt, combine them at 70:30, 50:50 or 30:70, and what each gives on your starting colour.
The short answer: yes, henna and indigo go on together, and that one mixed paste is how you get brown. Rest the henna 3–4 hours, ideally 8. Then mix the indigo fresh with warm water and a pinch of salt, combine the two at 70:30 henna to indigo for light brown, 50:50 for medium or 30:70 for dark, and apply straight away. Leave it on 1–2 hours, rinse, and don't shampoo or oil for 24 hours.
Can I mix henna and indigo together?
Yes. Mixed into one paste and applied once, they give brown. Henna lays down warm copper-red; indigo brings the cool blue that turns that warmth into brown. The ratio decides how warm or how deep the brown reads.
This is the one-step method, and it's the route for every brown shade. Black is a different system: henna first, then a separate high-indigo step over it in the same session. If black is what you want, use the two-step method instead.
What is the best mix of henna and indigo for brown hair?
Start from the three canonical ratios: 70:30 henna to indigo for light brown, 50:50 for medium brown, 30:70 for dark brown. More henna keeps it warmer; more indigo takes it darker and cooler. They're starting points, not swatches, because your own hair is half the result.
What colour do you get when you mix henna and indigo?
| Starting colour | 70:30 | 50:50 | 30:70 |
| White or grey | Warm light brown, often warmer at first | Medium brown | Dark brown |
| Blonde | Warm light brown | Medium brown | Medium to dark brown |
| Light brown | Warm, richer light brown | Medium brown | Darker brown |
| Dark brown | Warmer, richer brown, no lightening | Deeper brown | Dark to very dark brown |
| Black | Little visible change | Little visible change | Little change, or slightly deeper |
Neither powder lightens hair, so a mix can't take a dark base to a lighter brown. Grey percentage, porosity and any henna already on the lengths all shift the outcome, which is why a strand test is worth the hour.
What you need
- Spierb Henna Powder and Spierb Indigo Powder, measured to your ratio. Together, allow about 30–50 g for short hair, 75–100 g for shoulder-length and 150 g or more for long or thick hair.
- Two non-metallic bowls, a spoon, and a pinch of salt for the indigo.
- Comfortably warm water, or warm filtered tea for the henna.
- Gloves, clips, a shower cap or damp towel, petroleum jelly for the hairline, and an old towel.
Before you start
Patch test 24–48 hours ahead with the finished mixture, on a small area of intact skin, and skip the colour if it brings burning, persistent itching, swelling or marked irritation. Then strand test the exact ratio you plan to use, and judge that strand after 24–48 hours, so you see the colour you'll actually live with.
Start with clean, product-free hair, dry or slightly damp, and no heavy oil on it.
How do I mix and apply henna and indigo?
Henna first and rested, indigo last and fresh. The timing is the method: indigo loses its performance sitting in the bowl, so it's mixed only when you're ready to put it on your head.
- Mix the henna portion with comfortably warm water to a thick-yoghurt paste, cover it and rest it 3–4 hours, ideally 8.
- When you're ready to colour, mix the indigo portion in a separate bowl with comfortably warm water to a smooth paste, and add a pinch of salt. Don't rest it.
- Combine the fresh indigo with the rested henna at your chosen ratio: 70:30, 50:50 or 30:70 henna to indigo.
- Apply straight away to clean hair in sections, saturating roots and any grey thoroughly.
- Cover with a shower cap or damp towel so the paste stays moist.
- Leave on at least 1 hour and no more than 2.
- Rinse thoroughly with water.
- Don't shampoo or oil for 24 hours.
Never mix the indigo in advance. Resting it the way you rest henna is the most common reason a brown comes out weak or patchy. Mix it, salt it, combine it and apply it in one go.
How long do I leave henna and indigo on?
One hour minimum, two hours maximum. Longer isn't how you get a deeper brown — the ratio does that job, and indigo shouldn't be left on overnight.
Rinsing and aftercare
Rinse with plenty of water until the hair feels clean rather than gritty, working through the roots and the back of the head where paste collects. A light conditioner is fine if you need slip for detangling.
Then leave the hair alone for 24 hours: no shampoo, no oil. Indigo keeps settling during that time, and an oily coating gets in the way. After that, go back to your usual gentle routine.
What to expect afterwards
The colour carries on settling after you rinse, so don't judge it wet. On white or grey hair it can look warmer or less even at first and even out as it settles. Look again in daylight the next day, then decide whether to shift the ratio next time.
Common mistakes and quick fixes
- Too warm or coppery: move one step towards indigo next time, 70:30 to 50:50, or 50:50 to 30:70.
- Too dark or too cool: move back towards henna, and keep full-length applications occasional.
- Weak or patchy brown: the indigo was probably mixed too early, or the paste was spread thin. Mix it last, use enough, and press it around the roots.
- Greys still bright: saturate them first and generously, and give the colour its settling time before deciding.
- Green or blue tones: usually indigo on a base with too little warm henna under it. Hair turned green after indigo has the fix.
Frequently Asked Questions
Can I get brown hair with henna and indigo?
Yes. A one-step mix of the two is the route to every brown shade, from warm light brown to dark brown. The ratio and your starting colour decide where it lands, and a strand test shows you first.
Can I apply henna and indigo in one step?
For brown, yes: combine fresh indigo with rested henna and apply once. For black, apply them separately, henna first and then the high-indigo mix, in the same session.
How often should I apply henna and indigo?
Let regrowth decide rather than the calendar. Once the lengths are the depth you want, colour the roots and refresh the lengths only when they've genuinely faded.
What can I mix with henna to get dark brown?
Indigo, at 30:70 henna to indigo. Mix it fresh with a pinch of salt, combine it with the rested henna and apply straight away for 1–2 hours.
How much indigo powder do I add to henna?
Work in proportions rather than spoons: about 30% indigo for light brown, half and half for medium, about 70% for dark brown. Scale the total to your hair length and thickness.
