I did 3 types of contouring at ㄷㅇㅇ, and it's already been 1 year. I've done this treatment for long curved square jaw + cheekbone reduction + chin tip. Maybe it's because the cheekbones were fixed, but it's still holding up well even after a year. I'm very satisfied with the slim lines and no worries about sagging. I'm doing it haha. I heard that ㄷㅇㅇ is a popular restaurant, and I think I've really seen the results.