Chemical compound resulting from the interaction of zinc with sulfuric acid. There is little research showing this to be beneficial for skin. The information that is available shows that it can be a skin sensitizer when used in large amounts. A small amount of zinc sulfate is sometimes used in high-strength vitamin C treatments to stabilize the vitamin C (typically seen on the ingredient list as ascorbic acid). In these instances, the zinc sulfate is unlikely to be a source of skin sensitivity.
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!