How to kill sperm on hands and face after a [blowjob]? [F18]

So I just gave my first blowjob and it was pretty rad. I have a few questions though. Firstly, is it normal that both of us giggled on occasion during the blowjob? (He's 23 I'm 18) He ate me out first for about an hour but I couldn't cum even though I was really turned on...is this normal? During the blowjob he was telling me what feels nice and what doesn't and sort of guiding me;is this normal? And lastly will a hot bath be enough to kill any sperm on my hands/face?