It's an effective Korean skin treatment you can use at home. This two-step mask combines a powerful ampoule rich in niacinamide (which brightens the skin) and peptides, with a cooling rubber mask that lowers the skin's temperature, giving you bright, glowing skin from within in just 20 minutes. Clinical results: Clinical tests showed the following results after using the mask for 20 minutes: - Lowered skin temperature by 10°F (about 5.5°C). - 94% of women noticed immediate skin brightening. - 100% of women showed glowing, radiant skin after a single use.