A hot compress is a method of applying heat to the body to increase blood flow to sore areas, which can reduce pain and speed up the healing process. Warm compresses are commonly used for the treatment of sports injuries, dental pain, post-operative wound healing, and ophthalmic conditions. They are believed to improve blood flow, increase oxygenation in tissues, and help manage inflammation. Warm compresses can be moist or dry, and they can be made at home with items on hand, such as a washcloth soaked in hot water, a gel pack that can be heated in the microwave, or an electric heating pad. Some of the medical conditions treated with the application of warm compresses include osteoarthritis, back muscle strain, tendonitis, fibromyalgia, boils, and headaches. Warm compresses are generally safe, but it’s best to hold off if you have a fresh injury, such as a cut or a burn.