OLAPLEX No.5 is formulated for everyday use on all hair types to restore, repair and hydrate without adding excess weight. No.5 contains our single active ingredient, Bis-Aminopropyl Diglycol Dimaleate for continued bond repair at-home or in-salon.No.5 Eliminates damage, frizz and flyaways for strong, healthy, shiny hair. OLAPLEX No.5 is Color-safe ,vegan and made without sulfates, parabens or gluten and never tested on animals.