kitchen cosmetics

Term made famous in referring to YouTubers in the beauty community who attempt to make their own makeup and cosmetics. Usually means having informal development environments, such as in their kitchen and bedroom, or in relation to unhygienic practices and questionable ingredients. 'Kitchen cosmetics' became a famous term regarding John Kuckian's makeup line.

Cassey: "What do you think of John Kuckian's makeup line?"
Michelle: "What makeup line? You mean his kitchen cosmetics?"