One customer's review of the Product:Eyeko 'Black Magic' Liquid Eyeliner ($22) says it all. "I'm an avid winged eyeliner girl and I've tried countless products on the market," she wrote. "I've always come back to this one — now I keep two just in case one runs out! It's the perfect black, glides on smoothly; the tip is not stiff but also not floppy; I can do the perfect wing with it or the thinnest line across my eyes; and it doesn't fade and is waterproof but washes off so effortlessly at the end of the day. The best part is that it promotes lash growth!"