I don't really believe in this hype because I've been winging my eyes since i was 14 yo. But heck, it's waterproof, I'll give it a try. Wow! The time i save us significant because you literally just stamp it, poof, done! The best part is, is actually even. With my chinky eyes, and uneven eyelids, it's can be challenging to make it even, but with the this, no problem! I mean, i can live without it, but it's definitely helpful and it does what it claims to do. This stays on even after 8hrs of work, through rain, sweat. It's pretty good