The Bruder Moist Heat Eye Compress is microwave activated.
Microwave for 20 seconds. To increase heat, microwave in additional 5 second increments. Do NOT exceed 30 seconds. Always touch test before placing over the eyes. If the compress feels too hot, remove immediately and wait 1-2 minutes before reapplying. Apply over closed eyes for 8-10 minutes or as prescribed by your doctor. If reused within 30 minutes, reduce heating time by half as your compress will retain some of the initial heat. The mask may not be heated by any other method than a microwave.