I love spending time in the kitchen cooking and baking, but I am quite the klutz and I burn myself with surprising frequency. After years of running for ice to soothe a burn, I just learned that this practice is a no-no. Ice actually further damages burnt skin. You should run the burn under cold water, which also cleanses the area as well. If you are concerned about water consumption — there is a drought happening here in rainy Northern California — a cold compress can help as well.
Butter and mayo are not good for burns either. First degree burns are easy to treat at home, but depending on how large a second degree burn is, it might require medical attention.