In appearance, castor oil is a translucent liquid with a yellow tint. It is an ingredient in a wide variety of household items from cleaning products to paints.
It has also been used to treat a range of medical conditions, most notably digestive issues. Castor oil is broken down into ricinoleic acid in the small intestine, which speeds up the process of digestion in the intestines. Although the evidence is less conclusive, castor oil has also been found to have some potential benefits for the face and skin.
Castor oil and ricinoleic acid are thought to increase absorption in the skin and are sometimes used in the treatment of various skin conditions, including dermatosis, psoriasis, and acne. There are also anecdotal reports of castor oil promoting hair growth, though no scientific evidence is currently available to verify this.
By containing ricinoleic acid and several other fatty acids, castor oil has some properties that make it a useful skincare product, particularly for the face.