I bought this on Amazon in August 2024 and have used it only twice. The first time, I was having trouble figuring out how to move the suction evenly across my face. I felt scratches on my face, which I could feel but could not see. A week later, I thought to give it a try again, and I was pulling the suction across my face with more confidence. I felt more scratches and red marks. At one spot, the scratch became a little deep. It took a few days to heal, which became a slight scar. I was upset and waited another week before I had the nerve to try again. I decided to change the grey disc that originally came with it.I tried many times but couldn't get the grey discs out. Unfortunately, I was a day late and missed the return window. I contacted PMD by email and explained my situation. They responded immediately and asked me to send a video of me trying to remove the disc and the purchase info. They sent a return label, and three weeks later, they replaced it with a new PMD. The first thing I did was remove the grey disc and put it back to ensure it was working. Since then, I have used it a few times and don't feel any scratches on my face. From this experience, the disc was stuck too tight the first time, which caused those scratches. My advice is to remove the disc and reinsert it before using PMD. The scar has been getting lighter since I started with the new PMD. My skin feels very soft, and the dark circle under my eyes has greatly improved. I am very happy with the PMD customer support.