I agree with A-Jock. No amount of exericise, dieting, or supplements are going to guarantee that you lose any kind of fat in one area and not in another. This is just their claim, because, of course, we women want to get rid of fat in certain areas.
The only effect these supplements have is upping your metabolism the tiniest amount by overloading you with caffeine. You can get the same reaction with 20 cups of coffee. All of the caffeine may also help suppress your appetite for a time, or act as a diuretic, so that it seems as though the product is doing as it claims.
The most important thing, though, is what A-Jock mentioned about how most of these supplements are not tested adequately or approved. For your health, it is best to just eat well, exercise well, and accept that your body may not be exactly what you want. I know, it sucks for all of us x( . Please reconsider these supplements.
Sara