Castor oil Castor oil is a thick, odorless oil made from the seeds of the castor plant. Castor oil comes from seeds of the ricinus communis plant, which is native to tropical areas of Africa and Asia. It is typically applied directly to the skin using a cotton ball. Castor oil is relatively safe to use, but some people have reported side effects after applying it to their skin. Castor oil is thought to have anti-inflammatory, antimicrobial, moisturizing, and some other useful properties. All types of Bulk packing solution is Available. for indian and Overseas Buyers