Ikebana Castor oil contains many beneficial components, including fatty acids, flavonoids, phenolic compounds, amino acids, terpenoids and phytosterols.Castor is said to be one of the oldest cultivated crops. Many of castor oil’s benefits come down to its chemical composition. It’s classified as atype oftriglyceride fatty acid, and almost 90 percent of its fatty acid content is a specific and rare compound called ricinoleic acid. Castor oil is considered to be pretty unique because ricinoleic acid is not found in many other substances, plus it’s such adense, concentrated source. It is produced by cold-pressing the castor bean seeds to extract their natural oil content.