Yeongdeungpo-dong I-Brow Bar by I-Yeon is recommended.

Let me introduce you to the brow bar I visit frequently~ It's a chain called 바이이연, and I go to the Yeongdeungpo branch because it's close to me. I've been there so far and everything has been successful. They are meticulous and friendly, and I am always satisfied with their service. The Yeongdeungpo branch is just about a 2-minute walk from Yeongdeungpo Station, which is even better. They do waxing, eyelash perming, and extensions, and I believe you can do multiple procedures at the same time! If you find eyebrow care difficult, I recommend you visit.

Everyone has good skills, but it might be a matter of luck, so try visiting a few times before making a decision!