Stearyl dimethicone is a synthetyic skin-conditioning agent that's a siloxane polymer. It add opacity and a silky feel to cosmetic products. This ingredient is considered safe as used in cosmetics.
Reference for this information:
International Journal of Toxicology, Volume 22, Supplement, 2003, pages 11-35
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!