Nutrex Hawaiian brand bioastin is noteworthy because The production of this additive is located in Hawaii, in an ecologically clean place. Extraction is performed using carbon dioxide. This is one of my most favorite supplements containing a useful substance - Hawaiian astaxanthin. I use this additive periodically, because from the very first time of use was amazed at its effectiveness. It is not toxic and there is no overdose from it. Improves glucose metabolism, and also improves blood circulation, lowers blood pressure. Astaxanthin has powerful anti-inflammatory properties, it is an excellent immunomodulator, it increases stamina in sports, it is very good for eyes, because it accumulates in the retina and improves blood circulation in it, eyesight becomes clearer, sharper, eye fatigue decreases, especially with long computer work . In studies, it shows good results in cataracts, glaucoma. Also, Hawaiian astaxanthin protects the skin from ultraviolet radiation, while not preventing the body from producing vitamin D3, contributes to a beautiful and quick tan, preparing the skin for the sun beforehand.