Ask her to quit using ALL make-up. Tell her you read they were all made with poison. And even the ones that say "Not tested on animals" were.
Once she starts to not wear make-up, start buying lots of alcohal and staying drunk. If she asks why are you doing this, tell her I thought you looked better with the make-up, regardless of the hazards. Now I have to drink to make you beautiful.
When she gets angry and calls you a fat jerk, tell her, " You liked me better on supplements too."
Fair? And the deal is sealed. She can kill bunnies and kitties for her vanity, and we can have high blood pressure.