They will not perform miracles. In other words, you can't just rub them on a fat tummy and a few weeks later, BANGO, a six pack! However, if you are already pretty lean...10% BF or less...you will see some difference after a few weeks of use. The best way to use it is on your stubborn areas...those that seem to hold onto fat more readily than others. So, if you don't expect too much, and use it correctly, than, ripping/cutting gel is a decent product.