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 or on dry hair. Apply in sections by parting all of your hair. Leave on for 3 to 5 minutes. Add a small amount of water and massage to gentle exfoliate. Rinse thoroughly and then shampoo.