Good dermatology clinic

Lately, my skin has been in such bad shape that I'm thinking about visiting a dermatologist. While looking for treatments, I came across skin Botox and exosome treatments. They seem okay, but does anyone know a good place to get them done? There are many advertisements, but I can't tell if they do a good job, so I can't decide. Also, has anyone had skin Botox or exosome treatments? I'm curious about how effective they are and whether they are worth it. If you know any good dermatology clinics in Gangnam-gu or Gangbuk-gu in Seoul, I would appreciate it if you could let me know. And if you've had these treatments, please share your experience~~~ The explanations are lengthy, but I feel like there are no real cases, so I'm curious.