The Kérastase Extensioniste Bain Fondant is a restorative hair treatment that gently detangles to enable a breakage-free comb-through. Help improve hair's natural fibre whilst increasing elasticity & strengthen from root to tip. Hair length quality appears visibly enhanced for a smooth-feeling, knot-free touch. Directions: Massage onto lengths & ends of towel-dried hair, leave for 2-3 minutes & rinse.