Single use packages. One-minute deep cleansing facial. Biore Self-Heating Mask is the original one-minute deep cleansing facial, specially developed to instantly heat up on your face to help open pores and deeply cleanse. Its unique heating action purifies your skin while it absorbs excess oils and deep cleanses pore-clogging dirt. When the mask turns completely blue, signaling it's done heating and cleansing, rinse mask away to reveal smooth, radiant, healthy looking skin. Dermatologist tested. Non-comedogenic (won't clog pores). Hypo-allergenic.