The short answer: choose by your starting hair colour and the result you want, not by the picture on the packet. Pure Red is single-ingredient henna and gives a warm red-to-auburn tone that is brightest on light or grey hair and shows as a copper sheen on dark hair. Deep Brown is a henna-and-indigo blend that gives chestnut-to-chocolate in one step and suits most medium-to-dark starting shades. Soft Black is an indigo-rich henna blend made for stubborn grey and for anyone who wants a rich, natural near-black without oxidative dye — and on heavy grey it gives its deepest, longest-lasting result when you lay down a henna base first (the classic two-step method). All three are PPD-free and ammonia-free, all three deepen over 2–3 days after rinsing, none of them can lighten hair, and every one of them needs a 24-hour patch test and a strand test before you commit. Here is how to pick.
First, the rule that decides everything: henna is translucent
Plant colour does not bleach or lift. It coats the hair shaft and adds tone on top of whatever colour is already there. That is why the same Pure Red powder gives flaming copper on white hair, warm auburn on light brown hair and only a red glow in sunlight on black hair. Before you choose a shade, be honest about three things: your current colour, how much grey you have, and whether you want a visible change or just warmth and shine. If you have never mixed henna before, read how to mix henna powder for hair first — consistency and resting time matter as much as the shade you buy.
The three shades compared
| Pure Red | Deep Brown | Soft Black | |
|---|---|---|---|
| What it is | 100% Lawsonia inermis (henna) only | Henna + indigo blended, one application | Indigo-rich henna blend; henna base first on heavy grey |
| Result on light / grey hair | Bright copper to red | Warm chestnut to medium brown | Soft, deep near-black (deepest with a henna base first) |
| Result on dark hair | Red sheen, mainly in light | Richer, glossier dark brown | Deeper, cooler near-black |
| Grey coverage | Grey turns copper (visible, not blended) | Good, dimensional, natural-looking | Best for stubborn silver strands |
| Steps & time | 1 step, about 2–3 hours on the hair | 1 step, about 2–3 hours | 1 step (2–4 hours); optional henna base first on heavy grey |
| Best for | Redheads, blondes, warm-toned brunettes, anyone who loves copper | Most brunettes, first-time grey blending | Heavy grey, black or very dark hair, cool-toned results |
| Price (100 g) | $12.99 | $14.99 | $14.99 |
Pure Red: when to choose it
Pick Pure Red if you want the classic henna look — warm, glossy, and unmistakably red in daylight. It is the only one of the three that contains nothing but henna, which makes it the simplest to mix and the most forgiving to apply. On blonde, light brown or grey hair it makes a real colour change; on dark brown or black hair it acts more like a gloss, adding a copper glow and a lot of shine without changing the base much.
The one thing to know: grey hair takes henna very strongly and turns bright orange-copper on the first application. If you have scattered greys and want them to blend rather than stand out, Deep Brown or Soft Black will suit you better, or plan on two applications of Pure Red so the greys deepen to auburn. The same shades work on facial hair — see our henna for beards guide.
Deep Brown: the everyday choice for brunettes
Deep Brown is henna and indigo blended in one packet, so you apply it once and get a chestnut-to-chocolate result. Because the indigo cools down the red, it is the safest first pick for anyone with medium-to-dark hair who wants to cover early greys, add depth and shine, and avoid an obviously red tone. The finish is dimensional rather than flat, which is what makes plant colour look natural next to chemical dye — our honest henna vs chemical dye comparison goes into that difference.
Two practical notes. First, blended browns can look slightly greenish or ashy for the first day and then warm up as they oxidise; do not judge the colour until day three. Second, indigo tends to fade a little faster than henna, so a brown may drift warmer over 4–8 weeks; a root or full refresh brings it back.
Soft Black: the two-step method for real grey coverage
Soft Black is an indigo-rich henna blend. Mixed, rested and left on for 2–4 hours, it builds a soft, natural near-black that reads warm-natural rather than flat synthetic jet black, and it deepens over 24–48 hours. On heavy or resistant grey, the most durable result comes from the classic two-step approach: a Pure Red henna base first, then the Soft Black blend on top. The henna base gives the indigo something to bind to, which is what produces a rich, long-lasting near-black instead of a fade-prone grey-blue. This is the route to choose for heavy grey, for very dark hair you want to keep dark, or for a cooler, less red result than Deep Brown. Our step-by-step guide to covering grey hair with henna and indigo walks through both steps and timing.
A safety point that matters: real plant-based black always takes two steps and a few hours. Any product promising jet black in 30–60 minutes from one tube is almost certainly using added PPD, the chemical behind most henna reactions. Read what PPD is and why instant-black products are dangerous before buying anything that sounds too fast.
Still not sure? Three quick decision rules
Rule 1 — match the shade to your base. Blonde to light brown: Pure Red for colour, Deep Brown for a natural darker look. Medium brown: Deep Brown. Dark brown or black: Deep Brown for shine and warmth, Soft Black to stay dark and cover grey.
Rule 2 — count your grey. Under about 20% grey: Deep Brown blends it well. Heavy or resistant grey: Soft Black, with a henna base first, is worth the extra time.
Rule 3 — when in doubt, strand test. Mix a spoonful, apply to a small cutting or a hidden strand, rinse after 2–3 hours, and look at it after three days. That costs you nothing compared with a colour you dislike on your whole head. If you would like to try all three tones (or henna body art) before committing to a full box, the Henna Starter Kit pairs 100 g of powder in your chosen shade with four body-art cones for $19.99.
Safety and what to expect after colouring
All three Freegrin powders are PPD-free, ammonia-free and plant-based. Even so, plant products can cause reactions in some people, so do a 24-hour skin patch test before every new box — our henna patch test guide shows exactly how. We cannot promise any shade suits every scalp or every head of hair; a patch test and a strand test are the way to find out for yours. Expect the colour to deepen and settle over 2–3 days, and expect it to last several weeks with a soft, gradual fade rather than a hard regrowth line; how long henna lasts on hair gives a full timeline. Henna and indigo are also plant-based companions to the rest of a low-waste routine — the same idea behind swapping a plastic toothbrush for a miswak stick, which our beginner’s guide to using a miswak explains.
Frequently asked questions
Can I mix Pure Red and Deep Brown to get a custom shade?
Yes. Blending the two powders gives an auburn-to-warm-brown range between them. Always strand test a custom blend first, and mix the whole batch at once so the colour is even.
Will Soft Black make my hair look blue or green?
A slight greenish cast in the first 24–48 hours is normal with indigo and disappears as the colour oxidises. On heavy grey, applying a henna base first (the two-step method) is what prevents a lasting blue-grey tint.
Which shade is best for covering grey hair?
Soft Black gives the most complete coverage on heavy or resistant grey. Deep Brown blends lighter grey naturally. Pure Red turns grey copper, which some people love as highlights but which does not read as “covered.”
Can I go from Soft Black back to a lighter colour later?
Not easily. Plant colour builds up and cannot be lifted out, and bleaching indigo-treated hair can give unpredictable results. If you think you may want a lighter shade in future, start with Deep Brown or Pure Red rather than Soft Black.
How much powder do I need?
100 g covers short to shoulder-length hair; long or very thick hair usually needs 200 g. If you plan the two-step route on heavy grey, order a Pure Red for the base as well as the Soft Black blend.
Ready to choose? Browse Pure Red, Deep Brown and Soft Black in the Henna Powder collection, or start with the Henna Starter Kit and test a shade before you commit. Patch test 24 hours first, every time.