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biotin

Also known as vitamin H, a water-soluble vitamin produced in the body. Considered part of the B complex group of vitamins, biotin is necessary for the metabolism of carbohydrates, fats, and amino acids (the building blocks of protein). However, it has no reported benefit for skin when applied topically.

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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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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!