Olaplex No.9 Bond Protector Nourishing Hair Serum is a weightless leave-in serum that shields hair from heat up to 450F, pollution, and daily damage. Antioxidant-rich red algae helps protect bonds while adding silky shine and manageability.

Applied to damp hair before styling, this 3 oz (90 mL) serum smooths frizz, prevents breakage, and provides up to 48 hours of protection the perfect finishing step to any bond-building routine.

• 3 fl oz / 90 mL nourishing leave-in hair serum
• Heat protection up to 450F / 232C
• Antioxidant-rich red algae shields against pollution and damage
• Smooths frizz and boosts shine for all hair types
• Color-safe, vegan, and free of sulfates and parabens