I can express neither positive nor negative about the product because I've used it so far only once. One complaint I have however already: The Lippenpads are far too long, which are too far beyond the mouth. I do not want at the same time fill my cheeks around, maybe would not be bad if it would cause this. In addition, also lacked an application note on how to use the pads, etc. I do not think that the pads are so beneficial to health, since they come from Asia.