I understand that there are exceptions where some men prefer hairy/natural women but in general, the multi-billion hair-removal industry is a reality and holds true across cultures and geographies. How and when did it start?
Not sure if this counts as NSFW or not so I will play safe here.
/u/sunagainstgold has previously answered Were medieval women as hairless as the movies show it? When did women start to shave?
/u/mimicofmodes alias chocolatepot has previously answered When did it become the social norm/standard for women to shave their legs completely?
More answers remain to be written, especially about women outside of Europe.
See also the social and cultural history of the Middle Ages booklist on the subreddit wiki.