This was held in place by a ribbon tied over the head and attached to a gold chin strap, a fashion existing from about 3000 to 1580 BC.
In ancient India, the beard was allowed to grow long, a symbol of dignity and of wisdom (cf. The nations in the east generally treated their beards with great care and veneration, and the punishment for licentiousness and adultery was to have the beard of the offending parties publicly cut off.
Various hormones stimulate hair follicles from different areas.
Dihydrotestosterone, for example, may also promote short-term pogonotrophy (i.e., the grooming of facial hair).
Confucius held that the human body was a gift from one's parents to which no alterations should be made.