Extraction Castor oil is obtained by cold pressing the seeds of the castor oil plant (Ricinus communis). Benefits of Mesmara Castor Oil Castor oil is a very pale yellow liquid with a distinct odour. 90% of castor oil's nutritional content is made up of ricinoleic acid .This, combined with the omega-6 and 9 fatty acids, penetrates the hair shafts and roots and nourishes it, restoring its optimum health and boosting hair growth. Castor oil penetrates the outer layer of the hair shaft. The added regrowth and reduced hair fall make your hair thicker and stronger. Anti-Aging for soft, supple, elastic skin. Diminishes appearance of fine lines and Wrinkles. Deeply Moisturizing for Glowing, youthful skin.