Plenty of MPA's allow facials. You just need to invest the time and money to become their regular as most won't do it on the first visit. It's also a huge YMMV thing.
A lot of guys don't want to believe their favourite girl is "doing the dirty" but I just laugh at them and enjoy cumming on their favourite girl's face. Besides, some of them are actually into it and enjoy guys who are dirty and not vanilla/boring.