Review (3/5): Definitely Not Smudgeproof
It works well as normal eyeliner but it is definitely not smudge proof. I work in a job where I am moving around quite a bit. I don't sweat a lot, but having moisture on my skin is enough for the eyeliner to smudge to my lower lashline just from blinking.
Otherwise, it looks okay and is easy to apply. It's just not exactly smudgeproof or waterproof.