I absolutely love my Derminator. It is so much less painful then rolling or stamping. I find that I only need to numb my upper lip when I use the Derminator. My only issue with the Derminator is that I find it difficult to glide it smoothly over my skin. Can water or anything else be used to make the skin more slick so that the Derminator can pass smoothly over the skin? Does anyone stretch their skin until it is taut while using the Derminator? I stretch my skin just as I would when I roll or stamp but there are a lot of YouTube videos that show people using the Derminator and they are not stretching their skin taut.