I just saw on TV a dermatologist with Katie Couric talking about treating sunburns. She said if you get a sunburn, you have about an 8 hour window to treat it and stop the long term damage & skin cancer risk. She said you can slather mustard on it or pour white vinegar on it, which can repair the skin and eliminate the free radicals (or something like that). Is that really true, the 8 hour window thing and mustard or vinegar? I never heard that before.