I remember, back in the era when players weren't nearly so hairy, a playoff final. Bernie Parent is at the bench on a break, and removes his goalie mask to reveal a scant beard. The broadcaster says that he has a hunting trip up north when the series is over, so it certainly was unusual.
Once read of Stan Mikita skating in the first practice of the year with an offseason beard. He said he had a razor in his locker and would shave once the owner ordered him to do so.