I don't remember exactly, but 5 years ago when I was 21-22, I had 2 types of surgery for my chin and square jaw in Gangnam. At the time, the doctor said that the sooner you get it done the better because your skin has better elasticity when you're young. Maybe that's why I don't have sagging cheeks or side effects. My facial contour doesn't have a single scar that's visible on the outside, and honestly, it's one of the best things I've done in my life. I know it's dangerous to unconditionally praise plastic surgery because you have so much luck, but I'm really satisfied and living a new life. ㅎㅎ