| Kerastase Specifique Bain Divalent Shampoo is a rebalancing cleanser for a scalp that tends to become greasy, ideal for hair with greasy roots and sensitized lengths. | | Kerastase Specifique Bain Divalent Shampoo is a rebalancing cleanser for a scalp that tends to become greasy, ideal for hair with greasy roots and sensitized lengths.