What it is: A pre-shampoo hair treatment that reduces breakage and split ends for visibly healthier hair. OLAPLEX Bond Building Technology™ is proven to relink broken disulfide bonds damaged by chemical services, heat, and styling. Hair Type: Straight, Wavy, Curly, and Coily Hair Texture: Fine, Medium, and Thick Hair Concerns: - Frizz- Color Safe- Damage, Split Ends, and Breakage Key Benefits: - Reduces breakage and split ends- Visibly strengthens hair- Restores healthy appearance and texture Highlighted Ingredients: - Bis-Aminopropyl Diglycol Dimaleate: Patented and proven technology to help repair broken bonds for stronger hair. Ingredient Callouts: It is also vegan and cruelty-free. No.3 Hair Perfector is now formulated without Lilial. What Else You Need to Know: This deeply reparative, at-home bond-building treatment for damaged hair is formulated with patented OLAPLEX Bond Building Technology™. It helps to rebuild weak and broken disulfide bonds for visibly healthier, stronger hair and to reduce breakage and split ends.