Astaxanthin is classified as a xanthophyll which is a carotenoid pigment it is found in fish and algae and contributes to the natural colour in many marine animals astaxanthin is a potent antioxidant due to its unique molecular structure in addition it helps to fight free radicals and maintain a natural healthy skin glow astaxanthin is a naturally occurring carotenoid derived from marine fish and algae astaxanthin promotes antioxidant health protecting the bodys cells and strengthening