10 Nontoxic Skin Care Ingredients That Beauty Experts Swear By

What it is: Naturally derived polysaccharide, a carbohydrate consisting of sugar molecules.

Who loves it: Joanna Vargas, celebrity facialist and founder of Joanna Vargas Salon and Skincare Collection.

What it does for skin: "My favorite ingredient is galactoarabinan, which is naturally derived from the larch tree. It causes more cell turnover than a glycolic but it's also anti-inflammatory, so it doesn't cause irritation, even in sensitive skin."

Product recommendation: Joanna Vargas Vitamin C Face Wash With Galactoarabinan ($40)