The Exfoliating Mask boasts a 2-in-1 action: scrub + mask. It helps to rid the scalp of impurities and excess sebum. It should be applied before shampooing, at the roots on dry hair. Apply, part by part, on entire head. Leave on for 3 to 5 minutes. Add a trickle of water and massage to gently exfoliate. Rinse thoroughly and then shampoo.