If your hair, like mine, tend to become oily over time (and you for some reason don't have time or don't want to wash it) it works perfectly fine to use Cacao as a dry shampoo.
The powder sucks in the excess grease from your hair and leaves it looking clean as ever. All you have to do is rub it into your hair (less is more. Start with half a teaspoon and add more later if needed) and then comb/brush it out a few times. Voila! Your hair looks great!
Cacao works best for brown and red hair. If you are blond you can use corn starch or potato starch for example.