I have a small book that was published several years ago. In it there was a studying using essential oils for hairloss; I think it was done in Sweden (I can't remember).
Your point of the coconut oil is excellent and something that I never thought of, or castor oil. There are have been many studies on coconut oil with the anti-bacterial/anti-viral/anti-fungus. Castor oil is healing -- don't know too much about the powers of emu oil.