Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good, if you get a good one

First review: I've been wearing mascara for more decades than I'd like to admit; this is one of the better ones I've tried. It is possible to smudge it but it takes quite a lot for that to happen. This mascara is just as good at lengthening and thickening as other masacaras but without the strange little particles the others add to accomplish that feat.Second review: After having ordered a few more of these, half of them turned out to be unusable. The mascara would come out in big gooey globs and nothing I tried could fix the problem. I ended up having to throw brand new ones away. I should have tried to get my money back but got too busy. I no longer buy this product because it's just as likely you'll get a bad one as a good one.