Originally Posted by AmeliaG

It's just blood. We've all got it inside us and there is around a 25% chance that a woman is bleeding at any given time.

A lawyer might recommend against it, but that's just a relic of woman-hating nonsense. Maybe we should also do it through a hole in the sheet because the chick is going to be bleeding at some point.

Cold water douche during menstruation sounds like something which could increase possibility of infection. Makeup sponge on its own is pretty effective for most shoots where the issue comes up.