You can use Diamond Touch Soft Eye Mask both for cold therapy by cooling and as hot therapy by heating.
Cold Use: Keep the product you have taken out of its box in the freezer section of the refrigerator for at least 2 hours. Cold use especially helps to relieve eye puffiness, dark circles under the eyes and swelling and pain caused by headache, migraine and sinusitis.
Hot Use: You can heat the product you took out of its box in 2 different ways, by keeping the product in water in a container with a maximum temperature of 80 degrees for 5-7 minutes. Another method is to heat the product in the Microwave Oven, taking into account the specified power amounts and times. 800 Watts: 15 Seconds, 1000 Watts: 12 Seconds. Hot use is especially recommended to help relieve dry eyes and treat styes.