The most common use of castor oil especially in the old days was to get rid of constipation.
When someone was constipated a person was given a tablespoon of castor oil by mouth and that cleared up their constipation pretty quickly although the castor oil tastes nasty it does wonders on constipation.
If you do take castor oil for constipation be prepared to get on the toilet soon after since castor oil works really fast when helping get rid of constipation.
Castor oil also cleans out intestines before having a bowel examination or surgery.
Others uses for castor oil are hair growth, treating skin conditions, reducing inflammation, relieves pain and castor oil can also be applied to your face and skin to open up pores and restore your skins natural moisture balance.
The uses of castor oil are endless and there's likely nothing that it cannot do. Well there probably is but at least castor oil has many more uses.