Olaplex No. 9 Bond Protector Nourishing Hair Serum is a weightless, antioxidant-rich serum designed to shield hair from pollution, heat, and environmental damage while providing essential nourishment. Formulated with Olaplex’s patented Bond Building Technology, this serum strengthens hair, enhances shine, and improves manageability. Its protective formula detangles and smooths hair, reducing frizz and flyaways. Suitable for all hair types, Olaplex No. 9 is ideal for daily use to maintain healthy, vibrant, and resilient hair.