OLAPLEX No. 9 Bond Protector Nourishing Hair Serum is a weightless, antioxidant-rich, silicone-free hair serum to protect from tangles, breakage, static, and future damage by nourishing hair, blocking pollutants, neutralizing free radicals, and providing heat protection up to 450°F. All hair types. Benefits - Satin shine - Style memory - Bounceback curls - Anti-static Patented OLAPLEX Bond Building Technology rebuilds broken and weakened hair bonds Antioxidant-rich Red Algae Extract shields hair from pollutants and neutralizes damaging free radicals OLAPLEX products are thoroughly tested in accordance with industry standards in-house and by independent third-party laboratories for safety and efficacy Research Results Scientifically Proven: Shields hair from pollution for 48 hours. Formulated Without - Silicones - Nuts - Phosphates - Sulfates - Gluten - Aldehydes - Formaldehyde