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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