Stupid question incoming…

So I have this coworker who has a beard that is red but is fading in the front. He told me that a friend of his had a theory as to why that happens…. It’s from eating pussy. Now, knowing quite a bit about the female body already, I tried to shut that theory down. I know that our PH balance can end up bleaching our underwear, but I seriously doubt that it can bleach someone’s beard.

Curiosity will kill the cat if I cannot get an answer do the following: can a woman’s vaginal fluids bleach a man’s beard? Please provide sources if you have them or can find them. Thank you!!!