Can a pitcher go to his mouth on the mound?

Can a pitcher go to his mouth on the mound? A pitcher can not go to their mouth while on the pitching plate (rubber). If a pitcher brings the pitching hand in contact with the mouth without distinctly wiping off the pitching hand before it touches the ball, that is an illegal act and results in an illegal pitch or balk.

A pitcher can not go to their mouth while on the pitching plate (rubber). If a pitcher brings the pitching hand in contact with the mouth without distinctly wiping off the pitching hand before it touches the ball, that is an illegal act and results in an illegal pitch or balk.