Mehndi, Amla and Coffee Hair Colour Mix: Ratios and Shades
Verdict: 100 g mehndi, 20 g amla powder and 1 cup of brewed coffee, rested 4 to 6 hours, still gives a henna colour, an orange to copper-red on grey and a warm tint on dark hair; amla softens the red a little and coffee adds far less than people hope.
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Here’s the buying mistake. Somebody adds coffee to mehndi, expects dark brown, and gets a bright copper top instead. Then blames the coffee. Wrong culprit. The truth is simpler. Henna’s colour comes from one molecule, lawsone, and it only makes orange-red. Everything else in the bowl, whether it’s amla, coffee, tea, beetroot, kattha or a squeeze of lemon, only nudges that orange-red a little warmer, cooler, brighter or duller, and none of them can add a colour the henna itself doesn’t make. For the plain henna recipe and the indigo two-step that really gives brown or black, see our mehndi hair colour guide. This article decodes the three-part mix.
What one batch of the mix contains
| Ingredient | Amount | Share | What it changes |
|---|---|---|---|
| Mehndi (henna powder) | 100 g | about 83% of the powder | All of the colour |
| Amla powder | 20 g | about 17% of the powder | Mutes the red slightly, softer curl, easier rinse |
| Brewed coffee | about 1 cup (240 ml), cooled to warm | the liquid | Mixes the paste; a faint brown cast at most |
100 g of mehndi covers roughly shoulder-length, medium-thick hair. Short hair needs 50 to 70 g; long thick hair needs 200 g or more, with amla and coffee scaled at the same ratio (5 parts henna, 1 part amla, about 2.4 ml of liquid per gram of henna).
What amla and coffee really do to the shade
Mehndi. Lawsone binds to the keratin in hair and stays until the hair grows out. On white hair it shows as orange at first, deepening to copper or auburn over 2 to 3 days as it oxidises. On black hair you mostly see a red glint in sunlight.
Amla. Its natural acids and tannins tone down the brightest orange, so the result often reads as a softer, slightly browner red. Many people also find the hair feels less stiff and curls loosen less. It won’t turn red into brown.
Coffee. Brewed coffee is a weak brown stain and mildly acidic, so it wets the paste well and can add a slight warmth. It cannot turn henna black or dark brown. A strong cup does a little more than a weak one. That’s it.
Henna makes red. Amla and coffee only choose which red.
How to mix, rest and apply
- Brew 1 cup of strong coffee and let it cool until it’s just warm, not hot. Boiling liquid can weaken the dye.
- In a steel or glass bowl (not iron), mix 100 g mehndi with 20 g amla powder.
- Pour in the coffee slowly, stirring, until it’s like thick yoghurt. You may not need the whole cup.
- Cover and rest 4 to 6 hours at room temperature. Ready paste shows a slightly darker, brownish layer on top.
- Apply to clean, dry, oil-free hair in sections, roots first, wearing gloves.
- Cover with a shower cap and leave 2 to 3 hours.
- Rinse with plain water until clear. Skip shampoo for 24 to 48 hours while the colour deepens.
What if you change the amounts
- More amla (above about 1 part to 4 of henna): the colour gets noticeably lighter and duller. Good if you want soft auburn; bad if you wanted strong cover on grey.
- No amla: brighter, redder, sometimes a stiffer feel.
- Tea instead of coffee: similar small effect. Plain water gives a slightly brighter red.
- Adding lemon juice: helps dye release but dries hair and scalp more. The coffee’s own acidity is usually enough.
- Adding oil or eggs to the paste: tends to block colour. Oil the hair the night before instead, and wash it out before applying.
- Resting overnight or 12 hours in heat: the dye can fade before it reaches your hair. Keep to about 4 to 6 hours in a Pakistani or Indian summer.
- Wanting brown or black: this mix can’t. Use the indigo two-step, and for grey cover specifically, read our safed baal henna and indigo guide.
Fixing the dry, straw feel
Henna coats and tightens the hair surface, which is why it can feel rough and a bit like straw right after the first rinse, especially on hair that was already dry from heat styling, hard water or a lot of sun, and this feeling usually eases after the next wash or two. Deep-condition two days later rather than immediately. Oil the lengths the night before your next wash. Space henna sessions to once every 4 to 6 weeks and apply only to the new root growth when you can, because piling layers on the ends makes them darker and drier each time.
Never use “black mehndi” or any henna that dyes skin black within an hour. It usually contains PPD (para-phenylenediamine), which can cause blistering burns, scars and lifelong dye allergy; our PPD and hair dye allergy guide explains the signs. Pure henna stains orange, not black. Do a patch test with a little of the mixed paste behind the ear for 48 hours, and a strand test on hair from your brush to see the real colour before you do your whole head. Henna can react badly with hair that has been chemically permed or bleached, and “compound” hennas with metallic salts can make later chemical treatments go wrong. Don’t use henna on babies or young children, especially anyone with G6PD deficiency, where it can damage red blood cells. See a doctor for any swelling, weeping skin or blisters after colouring.
Mehndi with amla and coffee: questions people ask
Does coffee in mehndi make hair black?
No. Coffee adds only a faint brown warmth. For black hair you need a second step with indigo after the henna.
What colour does mehndi with amla give?
A softer, slightly browner red than plain henna. On grey hair it’s usually copper or auburn after a couple of days.
How much amla powder should I add to mehndi?
About 1 part amla to 5 parts henna, so 20 g with 100 g. More starts to make the colour weak and dull.
How long should I soak mehndi with coffee?
Around 4 to 6 hours at room temperature. In very hot weather, check it at 3 to 4 hours.
How long should I keep mehndi on my hair?
Two to three hours is enough for most hair. Longer rarely makes it darker.
Why is my hair orange after mehndi?
That’s how henna looks on light or grey hair on day one. It usually deepens over 48 to 72 hours, and indigo is what takes it to brown or black.
Can I apply mehndi on dyed hair?
Pure henna over chemical colour is generally fine, but do a strand test first. Avoid henna before a perm, rebonding or bleaching.
Does mehndi make hair dry?
It can feel rougher for a few days. Condition two days later and oil before your next wash.
Can I use mehndi in pregnancy?
Pure henna on the hair is generally considered fine. Avoid black henna or anything with PPD, and patch test first.
Can I add kattha or beetroot to mehndi for a darker shade?
Kattha adds a slightly browner tone and beetroot a pinker one, but both are small shifts. Neither gets you to brown or black the way indigo does.
Does mehndi with amla cause cold or headache?
No. Some people feel chilly sitting with wet paste on the head for hours, which is where the belief comes from. Apply it in a warm room and dry your hair afterwards.
How often can I apply this mehndi mix?
Every 4 to 6 weeks, ideally on new growth only. More often just darkens and dries the ends.
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