Boys usually start to grow a beard around 13~16, and the timing of individual beard growth varies according to the living environment, genetics, and diet and nutrition.
During puberty, boys begin to develop secondary sexual characteristics, of which beard growth is one of the manifestations. Boys’ secondary sexual characteristics appear between the ages of 10 and 14, and changes such as voice change, laryngeal nodes, and body hair will occur, and the time for them to grow their beards is between the ages of 13 and 16.
Due to the secretion of sex hormones, gonadotropins, nutritional status and genetic conditions, some boys may experience early or late sexual maturation, and the time of beard growth will be earlier or later. This situation requires prompt medical attention to rule out abnormalities.