The castor bean comes from the castor oil plant, scientifically known as Ricinus communis. It is a flowering plant native to Africa and the Middle East but is now grown in many tropical and subtropical regions. The seeds, known as castor beans, contain a toxic compound called ricin, which can be harmful if ingested. Despite its toxicity, castor beans are also valued for their oil, known as castor oil, which is used in various applications, including cosmetics, pharmaceuticals, and as a lubricant. The oil is extracted from the seeds and is safe for use, as the ricin is removed during processing.