Protects and repairs damaged hair, split ends and frizz. A highly moisturizing and repairing shampoo that leaves hair malleable, shiny and healthy with each use. Olaplex No. 4 is safe for hair with coloring and proven to reduce breakage and strengthen all hair types.

How to apply
Always use when washing your hair or after rinsing the Olaplex N.°3 Hair Perfector. Emulsify. Rinse. Follow with Olaplex No. 5 Bond Maintenance Conditioner.
Olaplexâ® does not contain silicones, sulfates, phthalates, DEA, villages, glÃtenten and has never been tested on animals.