A method is provided for communicating to consumers through a test protocol chemical functionality of commercially available cosmetics. The method is a proof of the promotional advertising. The steps include comparing two or more different commercially available cosmetic products which advertise antioxidant functionality, contacting each of the products with a test system reactive with antioxidants, and generating a perceivable change in color proportionate to concentration of the antioxidant in the product. The test is preserved in a tangible medium such as a video and then shown to consumers who might have potential purchase interest.