Alcohol does not reduce swelling. The main ingredient within alcohol is 75% ethanol, which is primarily used to disinfect the surface of the skin and has no effect on reducing swelling. Alcohol can kill bacteria, fungi, including spores, etc., so it can be used in the complete skin surface disinfection, usually applied twice. However, alcohol is irritating and should not touch the wound or the inside of the wound, which will cause significant pain after contact. If there is edema on the surface of the body or a lump and need to reduce the swelling, should be in a short period of time for cold compresses, with ice or cold towels on the outside of the lump cold compresses, generally can reduce capillary bleeding as well as reduce edema. If the swelling subsides after two days, hot compresses can be applied with a hot towel to speed up the blood circulation around the area.