My mom was a nurse and came up with this concoction. It works better than anything I have ever tried.
Mix in a bowl 1) good scoop, 1/2 cup, of noxema 2) good bit, table spoon, of prep H and 3) good bit, 2 table spoons, of Sea N Ski suntan lotion (other lotion may work as well, I havent tried others). Mix well and apply to sunburn.
Noxema cools, prep H heals and stops pain, not sure what Sea N Ski does, but it doesnt work as well without it.