Applying toothpaste to a burn on the finger does not effectively alleviate the condition, nor does it effectively reduce damage to the skin, soft tissues, and muscles. Instead, it is advisable to promptly rinse the burned finger with ice water or cool water repeatedly for about 20 to 30 minutes. If there are ice cubes available at home, they can be used to apply ice packs to the burned area. This can quickly and effectively lower the local skin temperature, reduce the absorption of heat, and minimize damage to the human skin, muscles, and soft tissues. If the condition worsens, it is more appropriate to timely seek medical treatment at a hospital.