Developed by dry eye professionals, this is the electric heated mask that maintains the ideal temperature to help relieve dry eyes, MGD, and blepharitis. Unlike lesser masks with no temperature controls, it warms to a constant  temperature recommended by ophthalmologists to release congealed oils that can build up and clog tear ducts, using a special thermal fabric to evenly disburse heat along the Meibomian glands. With three temperature settings (110° F-135° F) and variable timer with auto shut-off. Recommended for two 10-minute treatments per day. Wipes clean with a damp cloth. AC adapter with 6 1/2′ USB power cord.