The Kérastase Serum Potentialiste Hair & Scalp Serum is a soothing scalp serum that revitalises and protects the scalp. Formulated with key ingredient vitamin c, this vitamin c serum for hair promotes hair health by neutralising the scalp from external aggressors and protecting hair from oxidation. This hair serum for dry scalp uses a fast-absorbing gel-texture which will help minimise the sensation of a dry scalp with its calming and soothing properties. Discover this innovative scalp care product to hydrate, protect and balance your scalp. Defend the uncomfortable feeling of a dry scalp.