L’Oréal Professionnel Serie Expert Inforcer, 500 ml, Hair Masks for Women, The L’Oréal Professionnel Serie Expert Inforcer 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 strengthens the hair fibre restores hair’s natural, healthy appearance makes it easy to comb through and prevents damage How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.