The Olaplex No. 9 Bond Protector Nourishing Hair Serum is a multi-use treatment expertly formulated to shield and enhance all hair types, addressing concerns from environmental damage to heat-styling stress. Powered by patented bond-building technology and enriched with antioxidants, this weightless, silicone-free serum delivers remarkable benefits including silky shine, super-softness, effortless detangling, frizz elimination, and improved bounce and curl retention. Integrate this perfecting serum into your regular hair care routine to protect against daily aggressors and reveal visibly healthier, more manageable hair with a beautiful lustre