cosmetician

plural cosmeticians

1. A person skilled at applying cosmetics.

   Is that like a cosmetician? "A cosmetician can refer to a person with little training," she explained, "who works, say, in a department store to sell and apply makeup."

   1990 June 10, William Safire, “On Language; Cosmetological Chartist”, in The New York Times Magazine, archived from the original on 25 May 2015

   1 more example

   And interestingly, many cosmeticians predict that high-def could actually reduce the amount of plastic surgery in Hollywood, because the tiny seams look Frankensteinian at such high resolution.

   2005 June 12, Clive Thompson, “Not Ready for Their Close-Up”, in The New York Times Magazine, archived from the original on 09 Feb 2021

2. A person who manufactures or sells cosmetics.