WatchCut Video just released 100 Years Of Beauty: USA Men and it's really something.
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Most of the research behind the looks came from men's grooming advertisements and commercials.
Starting with the 1910s, men wore slicked-back hair and had handlebar mustaches.
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Men really dressed up at the beginning of the 20th century because they had places to go and people to impress.
Clark Gable was the inspiration for the '30s look, which was a very thin mustache and v. sculpted hair.
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The 1940s look was modeled after the famous photo of the sailor kissing the nurse in Times Square...
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...you know, this picture:

Alfred Eisenstaedt / The LIFE Picture Collection/Gett
The '50s can be summed up in one word: Elvis.
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Look at that pompadour!
Come the '70s, the look was anti-disciplinary bodily practices like grooming and shaving.
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The '80s were very ~Wolf of Wall Street~.
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What were the '90s marked by if not grungy rocker hair?
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The hairstyle of the 2000s: Metrosexual fauxhawk.
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And of course, the 2010s can be defined by the beard–man bun combination, otherwise known as the lumbersexual.
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One more time for good measure:
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Oh, and this video was made with Movember.com to promote men's health awareness. Well done!