Wash or clean the face. Apply the mask with the fingertips extending uniformly over the face, avoiding the eye area and mucous. It can also be applied in other areas of the body such as neck, torso and back. After 10-15 minutes, remove the product with water. It is recommended to apply an ampoule of Acglicolic Classic, Acglicolic Forte or Acglicolic 20 after thorough washing of the mask. Frequency of use: apply twice a week. For a very oily skin or with impurities, use the treating mask once a day or every other day for 15-30 days, preferably at night. For maintenance, apply twice a week. In case of facial excessive dryness, reduce the frequency of application.