castor oil

The plant from which castor oil is obtained, Ricinis communis

Castor oil is produced from the leaves of the plant Ricinus communis.

Castor oil is a vegetable oil extracted from the purple-streaked seeds of the castor oil plant (Ricinis communis). Once widely used as a laxative, castor oil is now widely used as a lubricant (see lubrication) and in the manufacture of oil and varnish. Zinc and castor oil are combined in a soothing ointment to treat conditions such as nappy rash.