WHAT IS IT? Nutri-Supplement Scalp Serum by Kérastase is a healthy moisturszing scalp serum for dry scalps. This is our ultimate scalp care: a niacinamide serum that provides vitamins to a dry scalp to deeply nourish dry hair. This dry scalp serum has a non-greasy fluid formula that provides vitamins for a deeply nourished scalp. Acting like a nutrient supplement for the scalp, its milky, fast-absorbing texture makes it the best serum for dry hair. Bottle made of 20% recycled glass. NUTRI-SUPPLEMENT SCALP SERUM BENEFITS: +23% scalp moisture, immediately after application* 100% agree the product is not greasy on the scalp** 89% were satisfied with the product** 86% said the product nourishes the scalp** *Clinical instrumental test after Nutri-Supplement Scalp Serum ** Test performed on 31 men & women with dry scalp, after 1 week of use WHO IS IT FOR? For all kinds of dry scalp.