Kérastase Spécifique

Start with Bain Divalent at $48 (RRP $64). It purifies oily roots without drying out the ends and is gentle enough for daily use, which suits people who feel they need to wash every day. Add Argile Équilibrante at $64.50 (RRP $86) as a weekly clay cleanse. For a scalp that feels sensitive, dry or tight, add the Potentialiste serum at $76.50 (RRP $102). See all products for oily scalps.

Use Bain Divalent as your regular shampoo and wash twice: a quick first lather to break down oil, then take your time massaging the scalp on the second. Once a week, use Argile Équilibrante in place of shampoo. Apply small amounts to the roots of wet hair along a few partings, lather, pull through the lengths and rinse a little longer than feels necessary. Follow with a hydrating mask on the lengths and ends.

Part the hair and apply 3 doses straight onto the scalp, section by section. One dose is one pipette filled to the mark. Massage in and don't rinse. Use it once a day for 3 weeks, then 3 times a week. It suits normal, dry or oily scalps, and a night-time application is often easier to stick with if you style in the morning.

Spécifique is for oil balance and scalp sensitivity, and Bain Divalent helps soothe an itchy scalp. For visible flakes on a dry, sensitive scalp, Symbiose is the better choice.