Here are some of the essential oils that you can add in your castor oil to get the best of both worlds. Today, with an extensive range of essential oils available in the market today, the benefits of castor oil can easily be amplified by mixing the essential oils with the castor oil. The established fact that castor oil is one of the most effective natural solutions has led many men and women to leverage its numerous benefits for centuries. Castor oil is a potent natural ingredient that enhances the beauty and cures many chronic health problems without any side effects.