OLAPLEX No. 4 Bond Maintenance Shampoo is a nourishing, sulfate-free shampoo designed to repair and maintain healthy hair. This powerful formula works to gently cleanse the hair while rebuilding and strengthening its internal structure. It helps to reduce breakage, restore shine, and improve the overall texture of the hair. Suitable for all hair types, it supports color-treated hair by maintaining vibrancy and reducing damage. With regular use, this shampoo leaves hair feeling soft, smooth, and healthier with every wash.