The Dada Hot/Cold Eye Mask Gel is suitable for both cold and hot therapy. It reduce the symptoms of Dark circles, red eyes, Eye bag, puffy Eyes, Itchy eyes, Dry Eyes, sinusitis and migraine /It reduce the symptoms of Itchy eyes, Dry Eyes, sinusitis and migraine Cold Therapy-Place the mask in freezer for 30 minutes prior to use Hot Therapy- warm up in microwave for10 seconds prior to use, Warm up in Hot water up to 80-90 degrees for 3-5 minutes prior to use.