I have used this a little over a week, and it seems to be working. At for the warming sensation they tell you about, is a little shocking because warm is not quite the word I would use more like hot, but it goes away in 15 to 20 minutes, and you get used to it. I use it before work and my job is very physical so you can feel the sweat rolling. I also put it on at night after a shower and before bed.
This stuff will not help you loose weight but it does firm up loose flabby skin. I lost some weight recently and the skin has not caught up but this is helping it.