Just stumbled upon this product by the Shave Den. I see that Kevin A. used it today with his Mitchel's Wool Fat. Does this product work well with any soap or cream? When I found it I was looking for some menthol soaps that were not the standard citrus, mint, or eucalyptus. I really like the idea of adding it to what you already have when you want it and how much. All experiences and opinions welcome! :)