Cyanotech Corporation, an agricultural company, engages in the production and sale of natural ingredients and dietary supplement products from microalgae for health and wellness markets. The company offers BioAstin Hawaiian Astaxanthin, a natural antioxidant to enhance skin, and to support eye, joint, brain, and immune health; and Hawaiian Spirulina Pacifica, a nutrient-rich dietary supplement to support natural energy, immune system, and cardiovascular health, as well as a source of protein, antioxidant carotenoids, and essential nutrients. It also provides contract extraction, and research and development services. The company sells its products through distributors, retailers, and online channels; direct to consumers; and in bulk form to manufacturers, formulators, and distributors in the health food, cosmetic manufacturers and nutraceuticals, and dietary supplement markets. It operates in the United States, the Asia-Pacific, Europe, and internationally. Cyanotech Corporation was incorporated in 1983 and is headquartered in Kailua-Kona, Hawaii.