Symbiose Serum Cellulaire Nuit Anti-Pelliculaire Intensif by Kérastase is a scalp serum for all types of dandruff. It contains no sulphate and no silicon. The serum is enriched with salicylic acid for a breathable scalp, piroctone olamine that acts on all the causes of dandruff and bifidus, for a healthier scalp, with no more flakes.The Symbiose serum helps to eliminate dandruff at the source with its 8H continuous action, which is the most regenerative scalp moment.This non-sticky and non-greasy formula soothes scalp irritations & discomforts for less sensitivity of the scalp, promising up to 7 weeks of anti-dandruff efficacy*.Symbiose Night Serum has a translucent to milky serum gel texture combined with a luxurious fine fragrance.