Nutri-Supplement Scalp Serum by Kérastase is a moisturising scalp serum for dry scalps. This is our scalp care: a niacinamide enriched serum that provides hydration and care to nourish dry hair & scalp. This dry scalp serum has a non-greasy fluid formula that provides hydration and care for the scalp. Bottle made of 20% recycled glass.