Official policy is a brother cannot have privileges if they have a beard. some congregations might be lax and some exceptions are made but it's rare. I have seen that in NYC black brothers could have a soul patch but that's it.
fun facial hair fact: Go through all WT publications since 1980 or so (since they started using photos and not paintings). Try to find a white dude with ANY facial hair. You won't. You will find plenty of black and hispanics with mustaches but never a white guy. So if you're one of those JWs that uses those pictures as examples of proper dress and grooming, you're supposed to pick up on the fact the society doesn't want white dudes with facial hair.