I bought the unit and was rather skeptical. I suffer in the chin area under inflamed hair follicles and inclined in this area very pimples, horny skin and skin discoloration. I have there strong hair growth and'm plucking on daily. Quite often I get injured in this action and the skin becomes affected. I bought the machine, in the hope that I can counteract calluses and thus the Entzüdungen be minimized. I have now tried the device and I have to say - I'm thrilled. The skin was immediately buttery soft, all callused parts were almost gone. The subsequent incorporation of my cream was great and I went with baby skin to bed. Irritation from the treatment I had none. Neither redness nor other problems have occurred with me. My husband also had to serve and the success is visible - even after the first application. I'll let this be my daily evening cleansing ritual. What I think it's great that you can adjust the intensity levels and the time individually. Even partial applications are possible. You have to make the entire face not always. I can only recommend the device, but I have not bought it on Amazon, because I got it somewhere else for half the price and with a German guide and a German power plug! 5 * - my opinion!