First Aid Mistake: Not treating a burn long enough.
Forget butter or ice—the best way to soothe burned skin is to run it under cool water. But a few seconds or minutes isn’t enough; you need to do it for at least ten to 20 minutes. The heat from a burn travels deep into your skin, where it can continue to destroy tissue even if you’ve cooled the surface. You need the cold to soak in to prevent further damage.
Only after the burn has been cooled and it has stopped hurting, then you can put on a burn cream to prevent scarring.