OLAPLEX No.9 Bond Protector provides an anti-damage hair shield. This nourishing hair serum protects and softens hair while improving manageability for all hair types. The antioxidant-rich and silicone-free formula shields hair from pollution, heat, and future damage. It works by nourishing hair, blocking pollutants, and neutralizing free radicals. Expect satin shine, better style memory, defined curls, and control over tangles and static.