The most abudant amino acid in the body, glutamine can help improve the healthy, youthful look and feel of skin.

Referencse for this information:

Comparative Biochemistry and Physiology, August 2001, pages 23-32

Journal of Biological Chemistry, July 1998, pages 1763–1770

See amino acids

Back to Ingredient Dictionary

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!