This is probably one of the first eyeliners I have came across that has held true to their claims of it being water and sweat proof. I wore this all day, slept with it on and when I woke up in the morning it was still on my eyelids, not smeared all over my face. LOVE THIS! I recommend this to everyone! If you don’t already have this, you are missing out! Get some for your makeup box now!