Bioré Self Heating One Minute Mask gives you purified pores in just 1 minute. This unique formula heats on contact with water to open pores and draw out pore-clogging dirt and oil, then cools leaving skin tightly smooth and refreshed. With Natural Charcoal, known for its ability to draw out impurities and trap them. Use up to 2-3 times a week for deeply cleaned, healthy-looking skin starting with your pores. Oil-Free, Hypoallergenic, and Non-Comedogenic.