The leave-in treatment for weakened, colored and permed hair provides structural elements of keratin to the hair fiber. It restores the hydro-lipid coat of weakened hair, protecting it against environmental stress. DIRECTIONS: Blot hair with a towel. Distribute the product evenly throughout the hair strand by strand, trying to penetrate the active substances in depth until a film forms. Leave to act for about 5 minutes. DO NOT RINSE. Proceed with usual styling.