I started using this mascara because I have very fine lashes.  I had seen a review on line that this product was rated high on a list of "expert" reviewers.  I knew it was a bit on the pricey side, but decided to take a chance.  It goes on without clumps, feels great and makes my lashes look much longer and fuller. I have never had a problem with running, even though it isn't waterproof.  I have gotten many compliments since I started using it, as well.  I think it is worth trying for anyone with problem lashes.