I keep running into people who are a big fan of dry shampo.  My sister-in-law swears by it and only washes her hair evey three days.  I read that a homemade version can be made by mixing 1 tablespoon cornstarch & 1 tablespoon corn meal with a few drops of essential oil.  http://www.essortment.com/lifestyle/homemadedrysha_sido.htm
What essential oils do you prefer?  I am on list 1. 
   I am going to check with Matia to see if potatoe starch is better than cornstarch.  If dry shampoo works, I would have so much more time to cook LOL.  Have any of you used dry shampoo?