I tried no-poo and loved it. I used baking soda but found I liked bentonite clay even better for the wash and still used diluted ACV for the rinse. I had to find the right mix of water and ACV and it took a few times or else my hair felt like straw. But when I got it right, it was lovely.
I only used the clay or baking soda at the roots, never all the way through the hair. i figured it washes through the hair anyway as I rinse.
The problem was - it completely stripped the hair color out of my hair. I am grey and color my hair back to my natural brown. Both the baking soda and the clay stripped the color out of my hair more and more. This was over 4 weeks and only washing my hair with the no-poo every 3-4 days or so.
But I found that if I brush my hair really well daily, it isn't greasy. I find a natural bristle brush is good, but even better seems to be a wooden comb. It distributes the oils and leaves my hair very clean. I can wait to shampoo my hair for 5-6 days or so.
If anyone has any suggestions for a no-poo for color treated hair, I'd love to know. I have tried plain 'shampoo' bars which are more natural, but my hair feels horrible when I use those.