How to wash coily hair: pre-poo, sections, and sealing

Coily hair is the type the general advice serves worst. Sebum has the longest and most obstructed path to travel, so the ends are dry at any washing frequency. The cuticle lifts at every turn of the coil, so the fibre loses water quickly and catches on its neighbours. And the shrinkage that makes coils beautiful also means a strand's real length is several times what you can see, so a comb passing through is doing far more work than it looks like.

The routine is built around those three facts.

How often to wash coily hair

Roughly once a week, sometimes every ten days. The lengths would happily go longer; the scalp usually would not.

If your scalp flakes or itches before the week is up, wash it. A scalp cleanse — fingertips, scalp only, lengths left alone — is a legitimate mid-week option that keeps the skin comfortable without putting the whole head through a wash day.

The six steps

1. Pre-poo on dry hair. An oil or a conditioner applied to dry lengths thirty minutes or more before washing. Coconut oil is the one with actual evidence behind it: it penetrates the fibre and reduces the protein lost when hair swells with water. This is the step that makes the rest of wash day gentler.

2. Section — four at a minimum. Clip or twist each section and work through them one at a time, start to finish. Washing coily hair loose is the single decision that turns a routine into a three-hour detangling session.

3. Cleanse the scalp, section by section. A moisturising sulfate-free wash, fingertips against skin. The lengths are not the target and never were.

4. Smooth the lather down, do not bunch. Glide each section downward rather than piling it. Coils that move freely in water lock into each other, and every knot you create now is breakage later.

5. Deep condition and detangle in the same pass. A generous mask per section, then detangle with fingers or a wide-tooth comb from the ends upward while the slip is at its highest. This is the safest moment your hair will have all week — detangling dry, or wet without conditioner, is where coily hair breaks.

6. Rinse, then seal while damp. Water first, then a leave-in cream, then an oil or butter over the top to slow the exit. This is what the LOC and LCO orders describe, and the reason either works is the same: you are trapping water that is already in the fibre rather than trying to add it to a dry one.

Why sealing matters more here

Every hair type loses water after a wash. Coily hair loses it fastest, because the cuticle is lifted at every bend of the fibre and there is more surface area per centimetre of length.

An occlusive layer on damp hair slows that loss for hours rather than minutes. Skip it and the hair can be dry by evening on the day it was deep conditioned, which is the experience behind a great deal of "nothing moisturises my hair" frustration. Sequence beats product choice here, and the sequence is: water, then cream, then oil.

What to reach for

• A pre-poo oil — coconut is the one with research behind it, though a conditioner works as a pre-poo too.
• A moisturising sulfate-free wash, and a clarifying shampoo kept for once every month or two, because gentle washes leave buildup behind and coily routines involve a lot of product.
• A deep conditioning mask, used generously and often.
• A leave-in cream and a sealing oil or butter.
• A wide-tooth comb, clips, and a satin bonnet or scarf.

Protecting it between washes

The week between washes does as much for coily hair as the wash itself. A satin bonnet or pillowcase removes a large share of the friction hair experiences, and protective styles reduce daily manipulation — with one caveat worth repeating: styles tight enough to pull at the hairline cause traction damage, and traction alopecia is the one mechanical pattern that does not grow back. Tension that hurts, or that leaves small bumps around the follicles, is too tight.

Refresh with water and a little leave-in rather than more product on dry hair, and keep the ends tucked away. Coily hair rarely struggles to grow; it struggles to keep what it grows.