Bio-Xanthin is Astaxathin formulated for stability &potency from the micro-algae haemococcus pluvialis. Astaxanthin is a carotenoid with powerful antioxidant properties that has been calculated to be 10 times as active as beta carotene & 500 times as active as Vitamin E. Antioxidants help to protect cells & tissues from damage caused by the excess of free radicals. Free radicals are highly reactive substances produced in the body as a by product of the metabolism. Increased levels are associated with stress, atmospheric pollution & uv rays.