Davines OI Shampoo, infused with nourishing Roucou Oil, is the perfect daily shampoo to maintain soft, shiny, and voluminous hair. For all hair types. Hair is shiny, soft, fragrant and voluminous thanks to key ingredient Roucou oil. Roucou oil is full of beta-carotene & antioxidants; it strengthens hair and protects against the effects of aging and environmental damage.