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Propylene glycol, also known as 1,2-propanediol, is a synthetic (i.e., man-made) organic alcohol that attracts/absorbs water. The U.S. Food and Drug Administration (FDA) has classified propylene glycol as a food additive that is “generally recognized as safe” (GRAS).
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.