Nioxin System 4 Color Safe Scalp Therapy Revitalizing Conditioner, 300 ml, Hair Conditioners for Women, The Nioxin System 4 conditioner makes your hair easy to detangle and nourishes it, something all healthy, beautiful hair needs. Characteristics: makes untangling and styling easier repairs both mechanical and chemical damage ensures brilliant shine How to use: Apply after washing hair with shampoo. Apply to the scalp and hair, from roots to tips. Leave to act for a while, then rinse thoroughly.