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I go to Hair M, a local chain, and they teach the ladies there on site how to do shave men. I do not think "beauty schools" go that far. I think they cover shavettes for cleaning up the neck line...

There is a book in the Wiki and if you go to Archive.com or org, can't remember which and search for barber under the books section there is a 1951 Barber's Manual that details the entire process.
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