Concussion expert and alumnus Michael Micky Collins, Ph.D. '91 recently returned to the University of Southern Maine (USM) to give a lecture on sports-related concussions.
Castor works well as a toenail fungus treatment. For the same reason it helps fight acne, castor oil can get rid of persistent fungal infections, moles and cysts. Traditionally, the method used was to apply a small amount of castor oil with a pinch of baking soda to the infected area.
In the old days castor oil was mixed with zinc oxide and used for skin problems and to prevent bed sores for those confined to bed. It was excellent. I would be concerned about using it on the delicate facial skin though - castor oil plant is toxic, ricin is the agent extracted from it.