Infusium 23 Repair & Renew Leave In Treatment helps repair damaged hair and protects it from further damage. It infuses the hair cuticles to help strengthen it and foster healthy growth. In combination with the i-23 complex, this serum helps nourish and restore your hair's overall health. It also leaves your hair adequately hydrated and shiny. The i-23 complex is enriched with amino acids, proteins and pro-vitamins. Protects hair from further damage. Enriched with panthenol pro-vitamin B5 and i-23 complex. Nourishes and repairs damaged hair. Lightweight formula for everyday use.