evidence: Anticaking agent: Keeps powdered products (like salt, cake mixes, and cocoa) from clumping [...] People against the use of PG in food argue that its levels in food are beyond what the World Health Organization (WHO) recommends. According to the WHO, the acceptable limit is 25 milligrams of propylene glycol per kilogram of your body weight. In the U.S., the average exposure is about 34 milligrams per kilogram of body weight. One kilogram is 2.2 pounds. [...] If you're still concerned about PG in your food, you can do the following: