try this mix : cocnut oil + castor oil, put it in your hair for 1-2 hours, if you sleep with it thats even better...cause hair fociles open up during your sleep and they absorb the oil faster.
also try : olive oil ( it darkens and strengthens the hair) I once dyed my hair caramel blonde it was too light, i was going to dye it again, my mom suggested that i oil my hair with olive oil, three days later, it went almost 3 to 4 shades darker! it was a subtle dark caramel, almost chestnut! perfect shade!
the castor oil acts as a cataylst to increase hair growth, i know i've mentioned it various times in the eyebrow thread but its worth mentioning it here as well..
as how to get rid of the oil on your scalp, use shampoo for oily hair, that usually does the trick for me. Just buy a shampoo thats for oily hair, and when you want to get the oil out of ur hair later with that shampoo properly and it will go away
I remember doing the castor oil/coconut oil combo. It works amazingly well.
I would sit in a steam room for as long as i could bear it with oil in my hair (not for the faint hearted!), It worked wonders! My hair looked thicker and grewwww. I was getting compliments from my Indian friend
that meant everything to me because she had gorgeous hair herself 
im really glad & my hair looks like its growing faster its a +
