I had Rejuran done at Oh Sujin Dermatology Clinic in Sinsa Station . I also had it done at another hospital (I'll write a review about that place later), but the director did it more thoroughly than there. The downside is that there is no HB, only regular Rejuran, so it's painful, and there are a lot of patients, so make a reservation. It's hard ㅠㅠ and there's a wait . Rejuran is a simple procedure... I'm looking into other hospitals where it's easy to make a reservation and there's no waiting, but the director is careful haha. And it hurts so bad ㅠㅠ my eyes are filled with tears... It feels like I got an acne injection.