It follows an update to the dress and uniform code last July.
Gardaí in Dublin have been told to grow a proper beard or give up.
A senior member of the force told officers that if they haven't taken shape within two weeks and the face "still resembles a badly watered lawn in a heatwave", then it's time to admit defeat, according to the Herald.
It follows an update to the dress and uniform code last July that included allowing Gardaí to grow a beard.