I went to Gangnam Muse because I wanted to get it done cheaply, but there were so many doctors that I did not know who was doing the procedure, and it felt factory-like. I got Botox, but there was no effect at all. Even though there were so many people, the wait was not long.
It is a good place to go if you want something cheap, and it is good for getting simple treatments or inexpensive care like that. I have also been to the Anyang branch several times, and I think the Anyang branch is much better than the Gangnam branch. There are many branches, so compare event prices and choose the better place. I would not say it is a total no-go, but I also would not fully recommend it haha. I only recommend simple procedures or skin care.