I have yet to 'see' the ingredient list on Cutting Gel, but I read someone say that it was aminophylline. If this is true, then it simply acts as a local diuretic. Aminophylline has been added to "fat-reducing" creams for years, for this effect.
If you can get pure yohimbine, caffeine, and/or forskolin, then these could be added to Phloegel, or Ben-Gay, or whatever vehicle you want for topical application.