I have a recipe for a salve for sun -burns, burns, cuts and about anything else. I have made it, but only just a little. In it is Chickweed extract, Plantian Extract, Aloe Vera oil, vitamin E oil and a main oil of Apricot Kernel Oil. it works real nice.
The American Cancer website recommends just plain milk asap to help replace the proteins burnt out of your skin and cool the burn. I tried it and it works. I put milk in a bowl, took an old hand towel, got it soaked with milk and carefully applied it on my burnt skin. It was dipping a little so I went in the bath tub. When the towel stopped dripping, I poured more milk on to keep it wet. About 30 minutes and I had relief. My burn healed faster.