What do you apply when your skin gets sunburned?

I went to the swimming pool today, and when I got home, I saw that all the parts exposed to the sun had turned red like that and are now starting to sting. I hurriedly applied some aloe vera, but is there anything else I could use? Just as I was getting ready to sleep, I felt a burning sensation, and when I looked, my arms, legs, and neck were a total mess, covered in red bumps. I slathered on sunscreen on my face, but it feels like the parts I hadn't even thought of are screaming for me to look at them.