Castor oil is majorly used for constipation, skin conditions, infection, hair problems, swelling, inflammation, arthritis and much more. It is known as a stimulant laxative that is used to treat constipation and other health-related issues. Its anti-inflammatory properties help in healing irritated skin, arthritis, swelling, etc. In addition, massaging castor oil in scalp makes the hair stronger leading to significantly lessened hair fall.