Cosmetics are used to Cover Blemishes, not to make people beautiful.
Or Cosmetics are used to direct the viewers vision from the blemish area to some other feature.
Take note of such as,
Sarah J. Parker
Who only "look good at certain angles"
Beauty is personal, to the viewed and the viewer.
Examples can be observed by looking at statues and other art of the past, compared to current.
In olden days, fat people were "healthy", "Thin" were poor or diseased (consumption).
today we have peoples who are fat, apparently because of the Government being tricked into establishing a food pyramid. The Sugar industry hoaxed the government & people into believing Fats were unhealthy. Then substituting Sugar for Fat/Lard in many recipes.