Thin eyeliner that is easy to apply

This is The Saem eyeliner. True to its name, "Super Slim," it is really thin. I like that it is thin, allowing me to draw precise lines exactly the way I want. It was really comfortable to apply to the waterline. Also, since it is a waterproof product, it didn't smudge easily even in the sweaty, oily summer, so I felt it had good staying power. I think it came in brown and black, but I preferred the brown one.