Difficult to assess too quickly a product whose effectiveness measurement takes several weeks or even months. The manual takes a little patience before going "to work" ... The warnings are a bit scary, but hey, you're not the first, and then if it was really dangerous we would know right? In use, again, a little patience, but in the case of any sort of hair removal ... that said, it's still a little amazed! Price is obviously a drag, but it must be compared to the price (exorbitant) of permanent hair removal sessions. As for the "definitive" nature of this kind of "light" hair removal, I still can not speak ... (comment made by the "madame" ... Tester ...).