The studies I cited make pretty good predictions about where in a cycle a woman is based on facial appearance Since a cycle is only ~28 days, if you look at the accuracy of their predictions it's only possible if they can predict changes on the scale of days. This is not hard stuff.You have no evidence hormones will change your appearance over a day.
Incidentally, re: testosterone:
Reading men's faces: women's mate attractiveness judgments track men's testosterone and interest in infants
While the above doesn't make claims about the testosterone-based facial changes being detectable very quickly, they make the point that the women who are detecting such things are sensitive right down to a couple of days in their cycle (during ovulation). It would stand to reason that the male signaling would have a similar degree of accuracy. These sorts of signals lack value if they aren't relatively fresh.
Again, I don't need to show any of this in order to point out that your initial criticisms were off base. You would need to show that it's NOT possible in order to be justified in dismissing the OP's claims out of hand. '