L' Oréal Professionnel Absolut Repair Cellular Repairing Blow-Dry Spray for Very Damaged Hair: the lightweight formula with Lactic Acid, revitalises damaged hair, making it easier to blow-dry. Hair feels stronger, more supple & looks shiny as if transformed. Lactic Acid is able to create saline bonds between the keratin chains exposed in the cortex of damaged hair fibres. Directions for use: Shake before use. Spray L' Oréal Professionnel Absolut Repair Cellular Repairing Blow-Dry Spray for Very Damaged Hair onto shampooed towel-dried hair or dry hair. Do not rinse. Blow dry as usual.