Wow, I didn't realize what a difference not using shampoo to wash my hair was making until I stopped for two weeks. My hair was dry and frizzy, and my scalp was SO ANGRY. So angry.
So I've gone back to my beautiful baking soda (with a drop or two of lavender oil to add some pretty smell) and my apple cider vinegar. I doubt I'll go back, but now I have to figure out how to travel for more than two days with this set up.