Fortunately, I live in Milwaukee and can visit the Fiebings factory. On the advice of the technician, I used the black Low VOC. Had always used Pro Dye, but he said in black, the Low VOC was deeper and very dense. He was definitely right! This was dyed with a dauber (not dipped), 2 coats, black resolene diluted 50/50 with water and a final buff with Aussie. Almost no take off with the buff. I am convinced!