How to apply sunscreen properly

I got a text saying the seminar was canceled, so I was just rolling around trying to catch up on sleep... but then I heard that another class was still scheduled. Since that one finishes quickly, I hurriedly just slapped on some sunscreen, threw on a hat, and rushed out. I don't... need to wash my face, right? You didn't know, did you? I hope you didn't, lol.