Kérastase Specifique Masque Rehydratant, 200 ml, Hair Masks for Women, The Kérastase Specifique Masque Rehydratant hair mask is an essential step in your hair care ritual. Give it a moment to regenerate and it will repay you with vitality and beauty. Characteristics: moisturises intensely regenerates the hair along its entire length strengthens the hair fibre restores hair’s natural, healthy appearance hair is soft to the touch How to use: Leave to act as instructed on the packaging, then rinse thoroughly.