Rebuild and strengthen chemically weakened hair with phyto ultra smoothing hair mask a treatment that promises to leave hair sleek smooth and illuminated with shine the mask is recommended to restore comfort to the scalp after a chemical process making it the ideal product for relaxed andor colour treated hair a balance of sulphur minerals and polyphenols work together to repair weakened hair bonds whilst the fruit vinegars seal the surface cuticle in order to retain moisture and boost