Kérastase Resistance Masque Extentioniste is specially designed to restore damaged hair to its former glory. Banish split ends and breakage for good and boost your hair's natural shine. This intensive masque repairs hair deep at the follicle level. Even extremely brittle and damaged hair feels nourished, rejuvenated and ultra-soft and supple. The formula restores and repairs bonds in the hair's structure with a combination of maleic acid and creatine R. These reparative ingredients boost locks' elasticity and strength, so hair is more manageable and less prone to breakage. The lightweight formula seals the cuticle, so hair is hydrated and visibly smoother and tamer. For enviable gloss and shine on damaged, dry hair, this masque is the perfect solution.