Kérastase Ciment Anti-Usure is the the first double reconstruction treatment for weakened hair with "topseal" protection. Vita-Ciment® + Vita-Topseal®; Vita-Ciment® instantly rebuilds the internal substance of the hair fibre. Vita-Topseal then mimics the hair's natural cuticle layer and seals in the renewed strength. Hair feels full of strength and body and is beautifully soft and shiny.