Liquid eyeliner is the foundation of many an eye-makeup look, which is why it’s so important to make sure you’re using a top-quality formula. And as you’re likely already aware, a waterproof liquid ...

When we first beheld pizza cutter eyeliners, we were admittedly a little concerned. Wouldn't they just roll all over the place? Did we really want something inspired by a sharp object near our eyes?

Back in February, MAC teased a genius new liquid eyeliner that had everyone talking. Instead of a felt tip or brush, it used a rolling wheel applicator that kind of looked like a mini pizza cutter.