Men typically start developing facial hair in the later stages of puberty or adolescence, around fifteen years of age, and most do not finish developing a full adult beard until around eighteen or later.
How long does it take for a beard to fill in?
Facial hair, like scalp hair, grows in stages — and understanding it may help you maximize your beard-growing potential. A full beard can take 2 to 4 months to grow, as facial hair tends to grow between 0.3 and 0.5 millimeters (mm) every 24 hours.28 Oct 2020
What are the stages of beard growth?
Beard growth occurs in 5 stages, each of which has its own grooming requirements. Those stages are stubble, patchy, short beard, growth and grooming, and full bearded glory. While every man is different, facial hair normally grows at a rate of a 1/2 inch every month.