Aloe. 'After sun lotion' with aloe too. Lots of water, ibuprofen. I suggest straight up aloe vera for the first 48 hours as needed in addition to the after sun lotion. The aloe itself really cools the skin and helps the burning sensation, at least temporarily.
Booze as needed to forget about it long enough to well, forget about it.
I got burnt bad a few months ago. Was peeling for 2 weeks. Only hurt for a few days. But dandruff is a biotch when you shave your head, and that hurt like the dickens when I shaved.
