Castor oil is a vegetable oil obtained by pressing the seeds of the castor oil plant (Ricinus communis).
Castor oil has long been used as a remedy for hair loss and thinning hair, it contains natural compounds that promote hair growth. Castor oil is also a humectant, which means it attracts and retains moisture in the hair and skin.
A large percentage of castor oil contains Ricinoleic acid, one of the essential amino acids required by the human body. It’s an Omega-9 fatty acid that can penetrate into the pores of the skin and the hair follicles.