A cold compress is a simple medical tool used to reduce swelling, pain, and inflammation. It typically consists of a cloth or bag filled with ice or cold gel, applied to the affected area. Cold compresses are often used for injuries like sprains, strains, or bruises, as they help constrict blood vessels and numb the area. To use a cold compress, wrap it in a thin towel to protect the skin and apply it for about 15-20 minutes. This method is effective for both acute injuries and chronic conditions, providing relief and promoting healing. Always consult a healthcare professional for persistent issues.