Kérastase Ciment Anti-Usrue 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 & seals in the renewed strength. Hair feels full of strength & body & is beautifully soft & shiny.