Olaplex No.4 Bond Maintenance Shampoo is a highly nourishing and reparative shampoo leaves hair easier to manage, shinier and healthier for a salon worthy finish after each use. Proven to reduce hair breakage and repair and protect from everyday stress including; damaged hair, split ends and frizz. This colour safe formula helps to prevent hair colour fading and increases moisture levels, perfect for all hair types including coloured and damaged hair.