D-alpha-tocopherol is extracted from non-GMO sources of vitamin E. It can be derived from sunflower and soybean oil. It is a known fact that using D alpha-tocopherol oil prevents you from skin ageing and cancer and defuses free radicals. Using D alpha tocopheryl acetate is beneficial to deactivate free radicals. You can get natural d alpha-tocopherol from Matrix Fine Sciences easily.