NOW Foods Castor Oil is a 100% pure, hexane-free cold-pressed oil from the seeds of Ricinus communis — beloved for centuries as a natural moisturizer, hair care treatment, and skin-conditioning ingredient. Castor oil's unique composition — approximately 90% ricinoleic acid, an unusual hydroxy fatty acid — gives it its characteristic thick, sticky texture and exceptional humectant and emollient properties. It is particularly popular for eyebrow and eyelash growth, scalp conditioning, and as a thickening base for hair care formulations. When applied to the scalp, it helps moisturize and condition, creating an environment supportive of healthy hair. NOW Foods' Castor Oil is cold-pressed without hexane solvents for maximum purity, in a 4 fl oz bottle — ideal for regular cosmetic and personal care use.