I had to go out in the sun and get a sunburn ONE week before prom. I’m scared that when prom comes around my face will be all dry and peeling! What can I do to make sure I look my best on prom day?

I got pretty crispy today, which is fine because I was being dumb and not wearing sunblock. (I know, I should have, I’ll get skin cancer, whatever) My lower back is really pink. If a sunburn is going to blister, how long does it take for the blisters to appear? I was in the sun probably for two and a half ish hours. It’s five hours later and I have no sign of blistering at this point.