Kérastase Genesis Fondant Renforçateur, 200 ml, Hair Conditioners for Women, The Kérastase Genesis conditioner makes your hair easy to detangle and nourishes it, something all healthy, beautiful hair needs. Characteristics: prevents hair breakage improves the structure of the hair provides the necessary hydration makes untangling and styling easier seals the hair’s surface, making it more resilient How to use: Apply after first washing with shampoo. Leave to act for a while, then rinse thoroughly.