Description Olaplex No.9 Bond Protector Nourishing Hair Serum 90Ml The Hair Shield Against Damage Protect Your Hair From Daily Damage With This Silicone-Free, Silicone-Free Hair Serum That Protects Hair From Pollution For 48 Hours And Provides Thermal Protection Of Up To 450°F (232°C). With Red Seaweed Extract Rich In Antioxidants And Scientifically Proven Olaplex Bond Building Technology™. Environmental Pollution Creates Free Radicals, Oxidation And Destroys The Hair Protein. No9 Protects Hair From It And Keeps It Healthy. It Is A Serum, Which Has The Following Key Features: Protects Hair From Environmental Pollution Offers Shine Memory In Styling Protection Against Damage (Breakage, Etc.) Heat Protection Does Not Contain Silicone How To Use Apply It To Damp Hair And Can Be Used Either Alone Or In Combination With 6 And / Or 7. In Case We Combine It With No6 & No7, We Apply First No9 And Then No6-7. Additional Info