If you were a chemistry major in college, you undoubtedly heard of the American Chemical Society (ACS). It’s one of the oldest professional societies in the country.
They produce a magazine called Chemical and Engineering News and in one of their sections, they do a feature called What’s That Stuff. It outlines the chemistry of common consumer products.
Here is a list of the ones they’ve done about cosmetics.
Note, these articles were written by a non-cosmetic chemist so they have a slightly different perspective than you would get from us here at Chemists Corner.