Davines OI Roucou Oil, 135 ml, Classic Hair Oils for Women, Treat your hair to some luxurious care. The dry oil Davines OI Roucou Oil will make your hair smooth, soft and shiny. Characteristics: protects hair from adverse external factors repairs damaged hair structure makes hair velvety smooth significantly regenerates and protects hair prevents split ends How to use: Apply to the lengths and ends of dry or wet hair.