NO.9 Bond Protector Nourishing Hair SerumThe new Olaplex 9 is a hair serum that shields against pollution and heat, prevents breakage and protects hair. With added bounce back memory for wave and curl retention, controls frizz and removes tangles and adds shine. Key Benefits: Shields the hair fiber against pollution and heat Prevents breakage and protects hair Bounce back memory for wave and curl retention Anti frizz Removes tangles and adds shine Suitable and beneficial to all hair types,