Linda,

I'm talking about direct application. You're still using room temperature Urea water for mixing the dyes -- but, as I mentioned, the key is to cure the dyed yarn in a warm setting. Some people use gardeners seedling mats! Attached are the instructions from ProChem.

I've also used this method for one-shade low-water immersion dyeing. The results don't give you uniformity in the color, as you can imagine, but I like the slight variations.

Best,
Denise