- Specific shampoo for coloured hair. Its formula, characterized by a rich and full-bodied foam, gently cleanses the hair, protecting the colour and keeping it shiny for longer. - Illuminating and protective conditioner for coloured hair. Its formula is designed to untangle coloured hair and make it soft and silky, protecting cosmetic colour. Winner Eco Beauty Awards, Byrdie. - Lightweight OI All In One Milk is a multi-function leave-in spray treatment that softens, detangles, controls frizz and protects the hair from heat.