Hello all, making stain sticks for the first time. I know that some of you add d-limonene to your stain sticks, so I ordered some and was wondering about the process. @AliOop, I found a post of yours saying that you use 100% CO and 2% limonene. Is that 2% ppo, 2% of total batch weight or some other measure? Also, do you just add it to the water/liquid before adding lye? Anything that I should watch out for otherwise? TIA.