The Olaplex No.9 Bond Protector Nourishing Hair Serum is a milti-benefit hair serum that produces instantly visible results. This silicone-free formula features the patented Olaplex bond-building technology and is designed to protect the hair and perfect all hair types and textures. The addition of Red Aglage Extract is used to bond to the hair and act like an invisible shield, preventing damaging, smoothing the hair cuticle and neutralising free radicals. This weightless, leave-in serum leaves the hair with a satin shine and soft touch, whilst preventing static and managing frizz. Detangles and minimises blow dry time, plus protects against breakage and heat styling up to 230 degrees. Protects against damaged caused by pollution with this 100% vegan, cruelty-free, PH balanced serum.