Kérastase Nutritive Nutri-Supplement Scalp SerumThe Benefits: A luxurious milky fast absorbing formula with a vitamin blend and niacinamide to moisturize dry scalp for immediate comfort, leaving the scalp healthy and refreshed. Awarded She Finds Best New Beauty Award 2023 How to Use: Apply on the scalp, on dry or damp hair Apply 2 to 4 doses of product depending on hair thickness to dry or towel dried scalp, one section at a time. 1 dose = 1 pipette to the mark. Do not rinse.