A Korean two-step mask treatment that cools the skin and locks serum inside it to strengthen the skin barrier and soothe redness, giving you clear, smooth glass-skin. Skin type: combination, normal, sensitive. Skin concerns: dryness and redness. It is an effective Korean skin treatment you can use at home. This two-step mask combines a powerful serum ampoule rich in Allantoin (which repairs the skin barrier) and peptides, with a cooling rubber mask that lowers the skin's temperature, giving you calm, soothed skin in just 20 minutes.