Topical antioxidants: idebenone

Antioxidants prevent free-radical damage — a by-product of aging and metabolism, and environmental toxins such as tobacco and ultraviolet light.  They're responsible for skin damage, and damage to the body in general. Certain molecules — antioxidants — neutralize free radicals, which is why they're so important.

Topical antioxidant serums are one of the most popular beauty products on the market today, promising to promote collagen synthesis, diminish age spots, and reduce the appearance of fine lines, as well as partner with sunscreen to help fight those skin-aging free radicals.

One of the most potent antioxidants — idebenone — was originally a medication used to prevent memory loss. Now it's available as an anti-ager for skin that's been proved more powerful than other common antioxidants. You can only find idebenone in Prevage skin care products.

How it works: Idebenone penetrates better than coenzyme Q10 and offers more protection from the oxidation caused by free radicals. It also protects skin cells from the damaging effects of UVB rays.