Propylene Glycol

Commonly Used in:
Baked Goods
Cake Mix
Candies
Food Coloring
Frostings
Low-Fat Ice Cream
Salad Dressings
Vanilla and Almond Extracts

Propylene Glycol (proh-puh-leen ˈɡlīkôl) is a colorless, odorless liquid compound with a slightly sweet taste used to maintain the moisture of food products and ensure that ingredients are spread evenly.
The Food and Drug Administration has recognized the toxin as generally safe for human consumption. There is no evidence that Propylene Glycol affects the dietary system, but frequent skin exposure to propylene glycol can sometimes irritate the skin.

Propylene Glycol is not always listed on food labels, if you want to avoid this additive a fresh, healthy, whole food diet is the best way.