Olaplex No.4 Bond Maintenance Shampoo is a reparative shampoo formulated to strengthen and repair damaged hair bonds while gently cleansing. It helps to reduce breakage, restore moisture, and enhance shine by rebuilding the hair’s internal structure. Suitable for all hair types, it protects hair from everyday stresses and keeps it healthier, stronger, and more resilient. Benefits: Hair type:Suitable for all hair types, including colour-treated, damaged, and chemically treated hair. Hair concern:Ideal for damaged, weak, brittle hair needing repair and strength. How to use:Apply to wet hair and scalp. Massage gently to create a lather, then rinse thoroughly. Use regularly for best results, preferably followed by Olaplex No.5 Bond Maintenance Conditioner.