All humans grow hair all over their bodies. But the removal or grooming of this hair seems to have always been a very gendered practice. Men can have beards and moustaches, women cannot; men can have body hair, women cannot, etc.
Has it always been like this? Has hair on women always been seen as something that must be removed ?
Here's a collection of answers gathered by u/Celebreth.
To supplement /u/CptNoble's answer, you might check:
The FAQ: When did people begin shaving body hair and how has this been perceived by different societies?
AskHistorians podcast episode 142: Hair Down There, with Lyndsey Craig (discussion page)