I found this:
http://babyslime.livejournal.com/174054.html With all kinds of information on going without shampoo, and then going without washing your hair so much in general to keep your head more able to sustain itself. It sounded like something I wanted to try, so this is it, I am trying it. Week one, I will transfer completely over to a baking soda shampoo with an apple cider vinegar rinse. After that, I will start a slow retreat from daily washings until my hair can maintain it's health with as little interference from me as possible. I'm really excited. There is even some natural hairspray recipes...
It felt really weird mushing around the powder around my head. But it felt great when I rinsed it out. It also dried faster and looked less stringy when I headed off to work. There was no difference in when I brushed my hair after the shower.
If this really works, I could get a lot more into vintage hairstyling practices... which sounds really awesome!