Something I told my daughter almost twenty years ago, when she was 14 or 15, saved my 1½ year-old grandson from getting a very serious burn on his hand the other day. He put his hand, palm down, on a hot ceramic stovetop. His mother, S-Cat, remembered me saying when I was on the local volunteer ambulance squad that running cold water over a burn right away can reduce what would be a third-degree burn to a second, or a second-degree burn to a first. So she immediately picked him up, turned around and ran cold water over his hand. Fortunately she had been standing right there. At the burn center, they said she probably had prevented him getting a third-degree burn and that he might get away without even getting any blisters.
Care-takers of children, please take note! Of course this works equally well for the older ones of us who are occasionally unfortunate enough to get burned as well. Personally I like using ice even better, because it kills the pain. Just gotta be sure you don't freeze the tissue, which is a real danger, because as soon as you remove the ice, the searing pain returns almost immediately.