Got to be honest never really had a problem. If I book a girl who offers facial I've never been refused. Now I'm not talking EEs here, Scottish independents who as a rule, at least that's how I've found it, provide the services offered. Might get the odd one or two who don't like getting it in their hair, especially early in the day.
I've seen three new girls in the last month or so and they were all happy to take a load in the face;
Naughty but Nice
Lucy Longlegs
StickyNicky
Lucy even asked if I wanted to mess up her make up, which I thought was a nice touch. I'm sure there are many others happy to oblige. There's a lot of talk on here about agreeing before hand what services are on offer. Again I've never had a problem with this with the exception of anal, which understandably is not always available even if it's listed.
Btw never had to pay extra for it either.