Antioxidants should be part of every skincare regimen. An antioxidant is a molecule that inhibits the oxidation of other molecules, and in doing so, helps to neutralize damage caused by free radicals and environmental factors. Just as we apply sunscreen to provide a protective layer to the skin, we apply antioxidants so the skin can better protect itself.
The antioxidants most used in skincare are vitamins C and E because they best penetrate the skin.