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