Last year i read an article about how shampoo leaves a residue on your hair and it advised washing your hair with baking soda. i started doing that every day and by the end of a month, my hair was no longer a dry, brittle, frizzy mess. and it isn't greasy either! my hair is shiny and curly now!
of course, you have to have curly hair to begin with!
i dissolve 1-2 tbsp in warm water and use it just like i would shampoo. you can buy a 5 lb bag of it at costco for 6 bucks. think of all the cash you will save on shampoo! and you will have great hair too!