Cyanotech Corporation engages in the cultivation, production, and sale of natural products derived from microalgae for the health and human nutrition markets worldwide. Its products include BioAstin Hawaiian Astaxanthin, a dietary antioxidant that is used as a human dietary supplement and dietary ingredient to support and maintain the body's natural inflammatory response, enhance skin, and support eye, joint, and immune health; and Hawaiian Spirulina Pacifica, a nutrient-rich dietary supplement, which is used for extra energy, strengthened immune system, cardiovascular benefits, and as a source of antioxidant carotenoids. The company sells its products as packaged consumer products through distributors, retailers, and online channels; direct to consumers; and in bulk form to manufacturers, formulators, and distributors. Cyanotech Corporation was incorporated in 1983 and is headquartered in Kailua-Kona, Hawaii.