Apple Cider Vinegar: Apply apple cider vinegar to the burn with a cottonball, or make a cooling compress for a large area to relieve the pain. Keep the skin moistened. This remedy will prevent blistering and peeling.
With my children, I filled the bathtub with tepid water and poured a small bottle of vinegar for the kids to soak in for about 20 minutes.
I'm not endorsing all of these folk remedies, but I do know that my mom and grandmother had wonderful home solutions to many ailments. Check the list out here: Health911.com