Facial hair is a secondary sex characteristic in human males. Men often start developing facial hair in the later years of puberty or adolescence, approximately between 17–20 years of age, and most do not finish developing a fully adult beard until their early 20s or even later.[1][2] This varies, as boys may first develop facial hair between 14–16 years of age, and boys as young as 11 have been known to develop facial hair. In addition, the patches of hair can vary between bushy and bristly. Women are also capable of developing facial hair, especially after menopause, though typically significantly less than men.