I'm curious as to how there's a relationship between being a professional and growing a beard or mustache.
ok, i was just yelled at by my new employers so id be happy too.
It gives the impression that your too lazy to even shave. You have to look like a professional. You cant look like you were out drinking beers till 4 in the morning and didnt have time to shave.
heres an example of an application i found.
In addition to proper dress, employees are expected to present a clean, neat and business-like
appearance. For example, male employees are expected to have neatly combed hair and to be clean