There are a lot of castor oil creams and such. They do also contain other oils and ingredients, though. I wouldn't use castor oil straight. I like Kelly's idea of mixing it with olive oil. OO is NOT for everyone, though. It's very acidic, and I've heard it's not good for type 4s at all.
Originally Posted by Blackbanjogirl

Try diluting the castor oil with a lighter oil such as sweet almond, grapeseed, or jojoba oil. This will give the castor oil a much lighter consistency and can help you avoid using olive oil.