I rarely wear mascara because I have so much trouble with how almost all of them wear on me. With most, I always get a grey smudge under one eye by the end of a work-day, for example (so I'm not talking about after a long day followed by a night of intense partying!). I got a sample size of this mascara recently in a Sephora points perk and all I can say is that I absolutely LOVE this mascara. I like the fact that it gives a very natural look to my lashes and, therefore, NO CLUMPING at all. It truly gives definition because every single lash is visible and not clumped to its neighbours. And this does not smudge on me. I can't say if it's waterproof since I don't wear mascara while swimming but this has amazing wear and lasting power. THIS is a mascara I actually do wear every day!