Schwarzkopf Professional BC Bonacure Volume Boost, 200 ml, Hair Conditioners for Women, The Schwarzkopf Professional BC Bonacure Volume Boost conditioner makes your hair easy to detangle and nourishes it, something all healthy, beautiful hair needs. Characteristics: 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.