Antioxidant Protection Supports Healthy Skin. Gluten Wheat & Dairy Free. Astaxanthin is classified as a xanthophyll which is a carotenoid pigment found in fish and algae. It helps to provide the natural color in these organisms. Astaxanthin is a powerful antioxidant whose unique structure allows it to exist in both lipid and aqueous environments enabling it to be active throughout the body. In addition it helps to fight free radicals in the skin so as to maintain a natural healthy glow.