Well, with the above ideas, it is much easier to answer your questions. If the reason for your obesity happens to be the "disease" targeted by the slimming sticker, congratulations, it will be very effective. But ..... if not, as most predecessors answered this question ... "useless". I wonder if my answer will help you.
According to my personal experience in helping colleagues and friends lose weight, if you want to treat obesity, you must first find out the causes of obesity and then prescribe the right medicine. Instead of putting the cart before the horse to find a way to lose weight. I don't know if you understand this passage. )