What is first aid treatment for fourth degree burns?

There are no fourth degree burns. For first and second degree burns(redness and blisters), you can run the burn under cool water. You can also apply an ice pack or some Aloe Vera gel/spray. For third and electrical burns(charred/burned skin), you call 911. Then you cover the burn with a sterile bandage. DO NOT apply ointments, gels, or creams. DO NOT run under water or apply ice. DO NOT attempt to remove the clothing from affected area.