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.