I want some brown...cinnamon?

I want my hair color to change, but I want to do so naturally. The only thing that will lighten it, from my research, is cinnamon. The change is very subtle though. Barely enough to see a change. I believe I would have to do it over a period of time for anything noticeable. I was desparetly in meed of some moisture because I have not been following my moisture routine and I am now 12 weeks post. I don't want to shampoo my hair because my scalp is already dry and itchy. So last night I just did a co-wash. But not just any co-wash, I mixed it with cinnamon! Yes, I am going to start my color changing process!