One...mine...and a pretty face. I won't name, names, because some of them post here, and that would be disrespectful, but I really don't play well with others, and I don't like to share....so, there you go. I will say this, I doubt most, if not a vast majority of adult actresses really don't enjoy having a line of guys blowing splooge all over their face. They do it because it's their job, and that's what seems to be popular. I don't mind seeing a girl take a few loads....but those German Goo Girl movies are just out of hand...and watching a girl drink 25 loads from a mixing bowl is just not a turn on for me...nor is seeing her colon opened up wide enough to drive a small car into it.
I guess the answer is 1...just 1 is fine, but it doesn't bother me to see more, just as long as she doesn't need a scuba tank to endure it.