Pamper yourself with the Biore Self-Heating One Minute Mask, Charcoal, .25 x 4. In just one minute, impurities are rinsed away and skin feels clean and refreshed. After being activated by water, the Biore self-heating mask opens your pores, allowing the natural charcoal formula to draw out dirt and oil like a magnet for icky stuff. It finishes with a cool, tingly feeling for a luxurious, spa-inspired experience. Use this charcoal face mask up to 2-3 times a week for clear skin.