PEG-8 is a synthetic polymer that works to bind moisture to skin and as a solvent for other cosmetic ingredients, helping them penetrate more efficiently.

References for this information:

Protein Drugs: Basic Science and Clinical Applications. Milestones in Drug Therapy. Birkhäuser Basel, 2009, pages 127–146
International Journal of Toxicology, Supplement 2, 2006, pages 121–138
Toxicology, October 2005, pages 1–38


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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:

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