OLAPLEX No.4 Bond Maintenance Shampoo 250ml s a highly moisturizing, reparative shampoo that leaves hair easy to manage, shiny, and healthier with each use. No.4 is color-safe and proven to reduce breakage and strengthen all types of hair. OLAPLEX No.5 Bond Maintenance Conditioner 250ml is a highly-moisturizing, reparative conditioner for all hair types that leaves hair easy to manage, shiny and healthier with each use. No.5 is color-safe, leaves hair stronger than ever, and benefits all hair types and textures.