Since 1947 Antioxidant Support Supports Healthy Skin Gluten, Wheat & Dairy Free Dietary SupplementAstaxanthin is classified as a xanthophyll, which is a carotenoid pigment. It is found in fish and algae and contributes to the natural color in many marine animals. Astaxanthin is a potent antioxidant due to its unique molecular structure. In addition, it helps to fight free radicals and maintains a natural, healthy skin glow.