- A weightless, antioxidant-rich, nourishing serum powered by patented Olaplex bond-building technology - Provides protection from pollution for up to 48 hours and heat up to 450°F/232°C - Increases manageability, provides style memory, reduces static, and enhances shineOLAPLEX No.9 Bond Protector Nourishing Hair Serum Read The Beginners Guide to Olaplex here Powered by patented Olaplex Bond Building Technology™, the Olaplex No.9 anti-damage hair shield is a silicone-free, antioxidant-rich serum that increases manageability, delivers satin shine, provides style memory, and protects hair from pollution and heat up to 450°F/232°C. No.9 is packed with antioxidant-rich ingredients including Red Algae Extract to neutralize free radicals, prevent damage, and nourish the hair from the inside out.Pollutants create free radicals that destroy hair bonds and proteins causing tangles, split ends, breakage, and hair that’s hard to style. Antioxidants can prevent free radical damage, but your ha