Ancient Egyptian men shaved.
Well, sort of. As one of the purification rituals carried out by ancient Egyptian priests before coming into any contact with a deity, every hair of the body was shaved off. That's right — pubic hair, back hair, even the eyebrows came off. Since hair lice were such a big problem in ancient Egypt, and nothing unclean could come before a deity or even into the innermost chambers of a temple, it made sense to get rid of the hair.
In ancient Egyptian funerary and religious murals, priests are often depicted in a group, wearing white robes, and are usually the only bald people.
Variations in ancient Egyptian religions varied considerably across locations and eras, but the hairlessness of priests seems to be one of the more widespread practices.
Other purification rituals involved bathing (four times a day, with water and natron), dietary restrictions (no fish), clothing restrictions (those white robes they're wearing are made of the finest linen; the Sem priest sometimes wore a leopard skin during important rituals), circumcision (very common in the Late Period), and sexual purity (but usually only during the time spent as a priest).