Olive Oil Before Bed

[ganyuehan]

I've heard some people say that rubbing castor oil on your scalp then leaving it on overnight can stimulate hairgrowth, or is this just a very cruel practical joke that gives one an oily head?

 

[ganyuehan]

Thanks, and I apologize for typing olive oil as the header, but typing castor oil in my question. Oh well, it's oil to me.