Oh, Another castor oil tip I have is to mix the castor oil with proclaim glossing polish, fantasia IC, or some other silicon based polish. This thins the oils and makes it easier to work with.
I dilute mine with proclaim glossing polish and it works great...the proclaim also adds some heat protection and gives your hair slip when dentagling.
Also, castor oil soaks in over night. So don't be upset if it's a lil sticky ...just cover your hair with silk or satin and it should soak in nicely overnight.
Chayil