I recommend Maybelline gel eyeliner.

This is my favorite gel eyeliner.

It's a gel eyeliner from Maybelline.

I used to use Tony Moly's for a long time, but it clumped a lot, so I switched based on a friend's recommendation.

It's affordable, under 10,000 won, and best of all, it lasts a long time once you buy it.

I also recommend this to those with monolids~