Olaplex Professional N?2 Bond Perfector The Olaplex Professional Bond Perfector 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 restores hair structure strengthens the hair fibre goes deep into the hair fibre How to use: Wash with shampoo, then apply to damp hair. Follow the instructions included. Only for professional use.