Roffler thick and rich shampoo deeply cleanses scalp and hair by removing and controlling excess oil and styling aid build up. A specialty blue formula slightly opens each hair cuticle and allows for thorough, deep cleansing action. Use this blue formula shampoo for dark brown or blue gray hair. Use the blue formula for dark brown and blue-gray hair. Slightly opens each hair cuticle and allows for a thorough and deep cleanse. Deeply cleanses scalp and hair by removing and controlling excess oil.