Step 1: Purifying Mousse (Moisten the areas of the skin to be treated and evenly distribute a layer of purifying mousse by rubbing gently with the fingertips to sweep away the excess sebum and surface impurities. Remove with abundant water.) Step 2: Acne One (Apply a fine, even layer of acne one once or twice a day on cleansed skin, avoiding the eye contour and contact with mucus membranes. Subsequent application of dermatological sun protection SPF50+ is recommended during the day.) Step 3: Imperfection Control (Apply a small amount of imperfection control locally on cleansed, dry skin using a gentle circular motion to increase the intensity of the color until the affected area is evenly covered.) Step 4: Renewing Mask (Once a week. Apply a layer of pure renewing mask on cleansed skin, avoiding contact with the eye contour and mucus membranes, and allow to work for 5-10 minutes. Next perform a gentle friction massage to help the micro-particles carry away the impurities from the stratum corneum. Remove with abundant water.Subsequent application of dermatological sun protection SPF50+ is advised during the day. Do not apply the pure renewing mask while being treated with an acne-peel system.)