Prevent premature aging. Free radicals are considered one of the primary causes of premature aging. Every day our skin is attacked by free radicals cause by our contact with UV radiation and environmental pollution (cigarette smoke, smog, etc.). Antioxidants help prevent and repair the damage caused by these free radicals. Vitamins A, C, E and Alpha Lipoic Acid are all antioxidants commonly found in skin care preparations that neutralize free radicals, repair free radical damage and help keep the skin wrinkle free.