L'Oreal Pro Fiber REVIVE Leave-In is meant to be used on fine to medium slightly damaged by heat tools hair type.  Pro Fiber Revive Leave-In is a gel serum which will strengthen and condition your hair strands.  Meant to be used as the final step of the Pro Fiber Revive at home program to see full effects.  Apply on to damp towel dry hair. Apply one to two pumps, depending on length and thickness of hair.  Will have your hair looking shiny, feeling soft, smooth and lightweight.  Hair is protected  from heat styling tools up to 450º F.