Protecting from excess oils and scalp sebum, the L’Oréal Paris Elvive Hydra Pure Exfoliating Pre-Shampoo Scalp Serum purifies and cleanses for up to 72 hours. Powered by a 6% exfoliating complex starring salicylic acid, the formula gently buffs away dead skin cells, impurities and product build-up to leave hair feeling refreshed. Suitable for all hair types and textures, the treatment resists stripping away moisture for a clarified yet soft result that’s ready for subsequent shampooing.