This is one of the best liners I've used for my waterline, tightline and lower lashline. I tried this on a whim one day at the drugstore and it's one of the darkest liners that I've used. I can wear this all day and it stays on my lashline and basically wherever I put it, but the waterline area can be a little tricky. It stays on and doesn't smudge very much unless it gets wet, whether it be that you cried or sweated or if it started raining. This liner is not water proof. It is a great liner to tightline your eyes with. I love it.