[Leaders] AC 드레싱 스킨 클리닉 마스크/ AC-Dressing Skin Clinic Mask x 10 HOW TO USE After cleansing and toning, pat your face dry. Apply AC-Dressing Skin Clinic Mask and leave it on for 15 – 20 minutes. Do not wait for the mask to dry up as this will dehydrate the skin. Remove the mask and tap the face for a while. The essence will be fully absorbed after 10 – 15 minutes.