My wife thought I would be in misery, but I remembered a natural sunburn remedy from my mom that has been part of our family lore for generations: Use vinegar to season a tan.
After getting out of the shower, I applied some vinegar (any type works, but apple cider vinegar seems to be the best) liberally to all the affected areas. The next morning I had a couple of pink spots left on my face, but everywhere else was tanned as if I had spent a careful week with sunblock. I was in no pain whatsoever.
Though I would never recommend forgetting the sunblock, vinegar is an incredible first-aid remedy for dealing with a sunburn.
Battle Creek, MI