This ultra-lightweight, heat-protective hair styling serum creates a satin shine and lasting style retention while reducing tangles and static. Plus, it provides immediate pollution protection. Pollutants can bind to hair and cause free radical damage that affects the appearance of hair health. No.9 shields hair from pollutants for up to 48 hours. Clinically Proven Instantly shields hair from pollution 48 Hr OLAPLEX Pollution Protection Index TEST RESULTS Before + After: UNRETOUCHED IMAGES* *Results may vary. Results achieved by cleansing with N°4 Bond Maintenance Shampoo, conditioning with N°5 Bond Maintenance Conditioner, and applying N°9 Bond Protector Nourishing Hair Serum to damp hair before USAGE RESTRICTIONS Avoid contact with eyes. Cleanse, condition, and nourish hair with Olaplex No.4, No.5 and No.9. The bundle features a shampoo, conditioner and hair serum for maintaining healthy-looking strands.Vegan.Set Contents: No.4 Bond Maintenance Shampoo 250ml Ideal for frequently coloured hair, the shampoo works to clarify the scalp and strands while using patented technology to promote stronger-looking hair.No.5 Bond Maintenance Conditioner 250mlThe best-selling conditioner works to leave hair looking stronger by minimising visible split ends. Lightweight and colour-safe, the formula encourages detangling of hair and offers improved manageability with a glossy shine.No.9 Bond Protector Nourishing Hair Serum 90mlA leave-in hair serum that helps to protect and nourish hair. Red algae extract enriches hair with moisture and promoting a visible satin shine. The weightless serum provides heat protection up to 232°C.