How long does beard growth take?

[PostDeath 2002]

And also, does cutting the beard in the game stay like that until you cut it again or will it grow no matter what?

[Garto]

So far the most noticeable growth is when you travel from one map to another.. Haven't notice any growth so far from one map.

[cooperman]

i waited 5 days for a shop to restock i whent from a clean shave to small beard.