Dry, winter air can compromise the skin barrier and the skin’s ability to protect itself. Using antioxidants can help support skin that is already compromised from damaging free radicals. Free radicals are unstable atoms that can damage cells and cause illness and aging. They come from internal and external factors, such as smoke, pollution, and ultraviolet radiation from sun exposure. Antioxidants help repair skin, slow down signs of skin aging, and can help protect against skin conditions. Adding an antioxidant to your skincare routine can help to protect and prevent damage from free radicals.