Oh, fellow pale one, I literally feel your pain!

I was at a parade Sunday, and my fair, redhead's skin is roasted.
I found that sage water is the best thing for sunburn, and I made a batch the other day. You need fresh or dried sage (I've only ever used fresh, from my garden). Grab a handful of leaves, put them in a heat-proof bowl, and pour as much boiling water as you think you'll need for dabbing on the affected area(s). Steep, like making tea, for about 10-15 minutes. Remove the leaves, and, when cool, dip a washcloth in the tea, and rub/dab it generously over the sunburn, and let air-dry. Repeat 1 or 2 more times in 24 hours, if needed.
This works better than anything I've ever used, and smells nice. I'd grow sage just for this reason, if I got sunburned a lot.