Waterproof, sweat-proof and smudge-proof—this long-lasting gel eyeliner deposits intense, inky black color that stays put on your lids and lashline for a full 24 hours. How to Use It: Use it to define your eyes or create a graphic liner look depending on your mood. More Reasons You’ll Love It: Twist-up packaging and a built-in sharpener ensure a precise line every time.