Bioré® Self-Heating One Minute Mask give you purified pores in just 1 minute. This purifying mask warms to open pores and draw out deep down dirt, oil and impurities, then cools leaving skin tingly smooth and refreshed. You"re left with smooth, soft skin & naturally purified pores. With Natural Charcoal known for its ability to draw out impurities and trap them. - Hypo-allergenic - Non-comedogenic (won"t clog pores).