I recommend Cleanup Dermatology in Yeongdeungpo-dong.

This is a dermatology clinic I recommend to anyone living in Yeongdeungpo. I've been going there for quite some time. The doctors are very friendly, and they provide expert, thorough explanations. The one-on-one consultations were also excellent.

It doesn't feel like a sloppy job, but rather meticulous. I had freckles and blemishes removed here, and the results were so clean and satisfying. The person who managed it was also very skilled, so everything was great!!
The interior may seem a bit old, but the quality is good, so I recommend you visit.