Kérastase Specifique Bain Divalent is a shampoo to address oily roots, helps remove excess sebum, while cleansing and purifying the scalp. 1. Treats oily roots to remove excess sebum. 2. Cleanses and intensely purifies the scalp. 3. Nourishes sensitised areas and dry ends. 4. Helps hair fiber to regain softness and shine.