I'm not sure how this polish has such a low rating. A previous reviewer who said the color is thin must have gotten a bad batch. I purchased my bottle some time in 2016 as well, and it's fantastic. The flat color is practically one-coat opaque coverage. And the glitter is GORGEOUS. It's very subtle, so it can go over stamped nail art without masking the design, but it adds a beautiful layer of fairy-dust sparkle. The only reason my bottle has lasted so long is because I am reluctant to use it, lest I run out and can't replace it. (Oh, and also I have close to 300 nail polishes, so it takes a while to go through a rotation.) But now that I see it's available on Amazon, I'm going to buy a backup bottle (or several). Northern Lights is hands-down one of the best polishes in my collection.