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 and 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.