Kérastase Résistance Masque Force Architecte, 200 ml, Hair Masks for Women, The Kérastase Résistance Masque Force Architecte 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: regenerates the hair along its entire length goes deep into the hair fibre strengthens the hair fibre hair is soft to the touch gives hair a brilliant shine How to use: Leave to act as instructed on the packaging, then rinse thoroughly.