evidence: Propylene Glycol– a thickening agent used to make baked goods, salad dressings and hair products. It is also used to make antifreeze. It alters your skin cells by helping chemicals reach your bloodstream. I guess I’ll be throwing these cakes mixes away! EX. Duncan Hines and Betty Crocker cake mixes, Blue Bonnet Vegetable Oil Spread, Loreal Hair Dye and Corona Beer.