The Opti-Soothe® Moist Heat Mask features HydroBead™ technology, which absorbs moisture from the air and once heat activated, releases a natural, consistent moist heat. Delivering 10 minutes of controlled moist heat to give effective relief of Dry Eye, Blepharitis, MGD, Chalazion, and Styes. Also suitable for cold therapy eye allergies, puffy eyes, and contact lens irritation. Easy to use with 25 seconds in the microwave delivering 10 minutes of controlled moist heat. Soft and comfortable to wear, the Moist Heat Mask is also washable and reusable.