Castor oil is a thick, odorless oil made from the seeds of the castor plant. Its use dates back to ancient egypt, where. Verkkothinking about using castor oil for the face? Read what experts say are the benefits and drawbacks of the popular ingredient. Verkkoaccording to the u. s. Food and drug administration, castor oil — which is pressed or extracted from castor beans — is approved for just one medicinal use: Verkkosocial media influencers swear by castor oil for curing blurry vision, busting belly fat, and even killing tumors. But what does it actually do for the body?