I like this question. It's one of those details that are never shared to the mere public.
Personally when I'm done with a scene and splurged with cum on my face, usually i'm handed paper towels and baby wipes. Baby wipes are porn stars saviors! Of course it doesn't do the job fully.
After 5 minutes of chasing after the slinky effect of cum (if no shower) go to the bathroom, wash up with hot water, soap or even make-up remover. Whatever works until i get home and take a shower.
As fun cum can be its not so sexy when its dried up in places you didn't see before and find it later on when making errands before heading home. LOL
Even better is when I take my hair out of my clip and find hard crunchy areas that were soiled in cum. It's a messy job but someone has to do it!! <img src="/ubbthreads/images/graemlins/tongue.gif" alt="" />