I had really good skin, but a few years ago I suddenly started getting acne, and I've been struggling ever since. Meanwhile, I came across a YouTube video and saw a famous YouTuber posting a video saying that his skin cleared up pores and acne scars with this, and I was so intrigued that I tried it. I made an appointment at a dermatologist and went up to Seoul from the countryside, and they said it would be cheaper to do 3 treatments, so I immediately went for 3 treatments. But it was a burdensome price, so I thought I would have porcelain skin too, and I really had no doubts. Hahaha. I washed my face, applied numbing cream, lay down for 30 minutes, and then the doctor personally saw me. I sprayed the developed ampoule on my face and rubbed the roller on my face. It just felt a tingling sensation and I finished rubbing it. Then, my face got red. I didn't put on makeup on that day, but I put on makeup from the next day. I got it twice, but I didn't see any effect due to the pores and all that and the acne scars. ..If there is one thing that has improved, is it the skin texture? I stopped using 3 sessions and I haven't used the remaining 1 session for a year. Anyway, it's different for everyone, but I don't see any results.