1. Skin Hydration and Care Castor oil is rich in ricinoleic acid, a fatty acid that acts as a natural moisturizer. Applying it to your face or body before bed can help lock in moisture and reduce dryness.2. Hair Care and Nourishment Castor oil can deeply condition and nourish hair due to its fatty acid content. 3. Relaxation and Soothing Effects Applying a small amount of castor oil to areas like the temples or forehead may help create a calming effect, promoting relaxation before sleep….