Castor oil is a vegetable oil obtained from the cold pressing of the seeds of the plant Ricinus communis, of the Euphorbiaceae family. Rich in ricinoleic acid, an unsaturated fatty acid, it is widely used as a laxative .
Castor oil is also known for its reinforcing, restructuring and softening properties, effective in case of dry, brittle and broken hair . It is also widely used to reinforce and give volume to the lashes .