OLAPLEX® N° 9 Bond Protector Nourishing Hair Serum is the perfect solution for those who want to protect their hair from environmental damage and heat styling. It provides long-lasting protection for up to 48 hours and withstands temperatures up to 232°C. It contains antioxidant-rich Rotalgene Extract and scientifically proven OLAPLEX Bond Building Technology, which gives hair a satiny shine and improved manageability. It also provides styling memory, curl definition and anti-static benefits with every use.