Formulated with the brand's revolutionary Bond Building Technology™, The Anti-Damage Duo from Olaplex works to nourish and protect your hair. Featuring the iconic No.3 priming treatment alongside the brand new No.9 serum, the duo leaves hair with a shinier and stronger-looking appearance.Set Contents:Olaplex No.3 Hair Perfector 100mlA weekly at-home treatment that works to soften the texture of dry, damaged hair, while promoting a high shine finish. Used as a pre-shampoo treatment, the high-performance formula seeks to prime the hair, leaving a stronger-looking and shinier appearance. Olaplex No.9 Bond Protector Nourishing Hair Serum 90mlA leave-in hair serum that creates a weightless veil of nourishment, while providing heat protection up to 232°C. Promoting a glossy satin shine, the antioxidant-rich formula leaves hair feeling soft to the touch with enhanced flexibility and bounce.