With Specifique Masque Rehydratant, the hair fiber is deeply cared for, the hair is built up and gently detangled. It gets more moisture, shine and suppleness. The intensive moisturizing gel hair mask balances the moisture in the hair. Ideal for dry and dehydrated lengths .Intensively nourishing mask for immediate moisturizing of the hair lengths. The Kérastase Specifique Rehydratant Masque is an intensive moisturizing gel mask for dry and dehydrated lengths. The hair fibers are deeply cared for and the hair is built up and untangled.