Apocryphal, but someone once told me history of male grooming is an example of this: When only rich people could afford to shave, the fashion among the noble wa

Apocryphal, but someone once told me history of male grooming is an example of this: When only rich people could afford to shave, the fashion among the noble was to have a clean-shaved face to signal status, and poor people had beards. Once safety razors appeared, then the trend reverted.