Argan oil

What it is: Nicknamed the “Gold of Morocco,” Argan oil has been used for centuries by Berber women, but only recently made a significant appearance in the West. “This oil is one of the richest sources of the natural skin-saving antioxidant vitamin E,” says Liz Earle, founder of Liz Earle Skincare. Adds Cindy K. Angerhofer, director of botanical research at Aveda: “Argan oil is rich in polyunsaturated fatty acids including linoleic acid, omega-6 and tocopherols.”

Why it looks promising: Free-radical damage is the result of oxidation, a key factor in the aging of skin. Argan oil’s concentration of tocopherols, or vitamin E, helps protect against free-radical damage while essential fatty acids keep skin hydrated and balanced, making it a great ingredient in oil-control products.

Status: Argan oil is being tapped as a natural alternative to synthetic ingredients. One source: Kaeline Vitality Day Serum ($38; www.xandrarenouvelle.com)