OLAPLEX Nº.9 BOND PROTECTOR NOURISHING HAIR SERUM Size: 3 fl. oz. Condition: NWT; never opened in original packaging. Retail: $30 The Nº.9 Bond Protector Nourishing Hair Serum, infused with patented OLAPLEX Bond Building Technology, is a silicone-free antioxidant hair serum that instantly shields hair from pollution and protects against heat damage while adding satin shine and reducing static and tangles. Neutralizes free radicals and protects against pollution for up to 48 hours. Improves style memory and bounceback curls. Provides Heat protection up to 450ºF (232ºC) for a satin shine look. Reduces tangles and static. Silicone free, Sulfate free and PH balanced.