Well, I tried my hand at making yellow dock root soap. My first attempt was CP. I grated some YDR and place it in some olive oil and microwaved it to the point of boiling. Then I let it sit overnight. I filtered it thru a coffee filter to remove all fibers. Then, I used this infused OO in my total weight of OO in my recipe. When I added my lye water..it turned a deep purple/rose color. This pretty much stayed the same thru sap and gel. It turned out a bright lavender/pink...with some yellowish highlights. I used grapefuit FO....and the color is perfect for the fragrance.
Then, I decided to do the same with CPHP. I used less Yellow Dock in my OO infusion. This batch turned a salmon pink....lovely. I used Hobby Lobby's Sweet Pea FO in it. It's a decent batch. I'm quite pleased with both batches, in fact. Fascinating to see colors develop...with natural herbs. BTW...my YDR was fresh..not dried...for the first infusion...on the second batch, it had dried a couple of days after grating. I have plenty of YDR growing around me...no need to buy it.
That soap is FABULOUS!!!!! 
