Kerastase Immersion Nutritive Pre-Shampoo Nutrition Replenisher is a lightweight pre-shampoo treatment for normal to extremely dry hair. This product gets rid of dryness, frizz and dehydration. It nourishes and protects hair cuticles from environmental damage. The smooth, non-greasy texture preps hair for shampooing and styling with heated tools. This product can be used daily or as needed. Hair shaft is visibly revitalized leaving hir smoother and shinier.