Honey can be a bit of a miracle cure for all sorts of things can't it?
In simplistic terms, you'd think it might leave the hair sticky, but obviously that can't be the case.

Its probably ideal for hairwearers as it can add shine but not by using oils.
A couple of drops of Tea Tree would keep the scalp healthy if it were a lace system.

What about vinegar? Years ago women rinsed their hair in vinegar to make it shiny:
http://www.care2.com/greenliving/3-vineg...-hair.html