Rich, natural formula helps remove impurities Exfoliates and improves scalp and hair health Keep your hair and scalp healthy with the gentle exfoliation and natural ingredients in Chronologiste Revitalizing Exfoliating Scalp and Hair Treatment from Kerastase. This targeted pre-shampoo treatment is designed to help remove build up and impurities for a cleaner, healthier scalp. It helps take away problematic scalp build up that can weigh hair down and make it limp and lifeless. Ideal for all hair types. Kerastase Chronologiste Revitalizing Exfoliating Care Scalp and Hair Pre-Shampoo 6.8 fl oz