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Also known by the acronym PPG, polypropylene glycol is a polymer, or large molecule, of propylene glycol. Like propylene glycol, it is used as a humectant and a delivery agent in cosmetics. Despite reports that it can be a skin sensitizer, researchers have found that it does not present a health risk for people when used in cosmetics.
References for this information:
Critical Reviews in Toxicology, April 2013, issue 4, pages 363-390
See propylene glycol
About the Experts
Paula Begoun is the best-selling author of 20 books about skincare and makeup. She is known worldwide as The Cosmetics Cop and creator of Paula’s Choice Skincare. Paula’s expertise has led to hundreds of appearances on national and international radio, print, and television including:
The Paula's Choice Research Team is dedicated to busting beauty myths and providing expert advice that solves your skincare frustrations so you can have the best skin of your life!