美國杜邦公司所推出天然玉米發酵的1,3-丙二醇，溫和保濕劑

http://www.paulaschoice.com/cosmetic-ingredient-dictionary/definition/propanediol

"A glycol that can enhance the absorption of ingredients (such as salicylic acid) into the skin. Propanediol can be derived naturally (from corn) or synthetically. It has hydrating properties that may leave a smooth, dewy finish. Propanediol is a well-tolerated ingredient, not likely to cause sensitivity."