#1 Prestige Hair Strengthening Treatment* This weekly pre-shampoo treatment repairs and prevents damage for stronger, healthier-looking hair after just one use. Not a conditioner, mask, or protein treatment– Nº.3 Hair Perfector™ is an innovative bond builder to repair damage where it starts, on a molecular level. That’s why it’s the little bottle stylists, editors, and healthy hair seekers swear by. Patented OLAPLEX Bond Building Technology™ rebuilds broken disulfide bonds to restore strength for visibly healthier hair. KEY BENEFITS - Repairs and prevents damage - Hair looks and feels healthier - Reduces breakage and split ends Vegan Cruelty Free PH Balanced Gluten Free Nut Free Paraben Free Phthalates Free Phosphate Free