for almost 4 weeks I have now used the Derma Wand regularly and intensively. Certainly I had no ad hoc results expected, but is promised if so much, you expect at least one change after this time. But nothing has happened - not even to finer lines and wrinkles. The unit I had acquired due to various problems, but none of the problems has undergone a change. I am bitterly disappointed and even my request from the manufacturer was not answered. As has really done nothing, I give the Derma Wand within the period that have been promised a money back guarantee at least, back. I can not recommend the device definitely. What would "wonder" now beyond the four weeks showed I do not know but I no longer believe that suddenly what would do. Too bad! Well only that one must give it back.