Mascara's a lot like cereal—once you've discovered your favorite kind, it's tough to kick the habit and try something new. But here's one reason why you should ditch your basic black wand and go for bold blue: even the most chic beauty lines, like Benefit and Vincent Longo, are creating colored mascara now, and blue is a top seller among the shades. Why? It's all in the color science: blue brightens up the whites of your eyes and, as a result, it's guaranteed to give you a more sparkling stare. So go ahead...try it, then gaze into the eyes of that special someone.