I am a female bb, and I don't have any changes in my face... I also have never taken any hard androgen.. the women who's face changes, slam rediculous amounts of test.. my theory is that they don't see it right away and they love how they look (being reinforced by the shmoes that surround most of them) and they continue to use...
even when I am dry for a show my face doesn't look in the least masculine, so it can't be fat loss... I have heard that if you take MASS amounts of anything.. be it gh, or androgens, it will have something to do with changes in your face.. but if you take it slow and small amounts, and clean out periodically, you can preserve your look.
my 2cents
dg