Olaplex Hair Perfector No.3 100ml is a weekly at-home treatment that reduces breakage and visibly strengthens hair, improving its look and feel. This treatment is not a conditioner but a professional-inspired product that strengthens and repairs all types of damaged hair. When used as a two-part system with No.0 Intensive Bond Building Hair Treatment (sold separately), it provides 68% more repair and 3x stronger hair in just one use. With a pH balance of 3.5-5, this treatment repairs damaged and compromised hair, strengthens and protects hair structure, and restores healthy appearance and texture. It is suitable and beneficial for all hair types and is paraben-free, sulfate-free, phthalate-free, cruelty-free, and vegan.