We boosted our formula, so it delivers our most intense liquid eyeliner yet-through three ingenious tips-and lasts up to 24 hours This dramatic liquid eyeliner delivers highly pigmented, jet black color that's ultra smooth, with no skips. It's also waterproof, transfer-proof, smudge-proof, and smear-proof (because life happens). Our 3 Unique, flow-through pens make for easy, mess-free lining no matter your look: Revlon ColorStay Sharp Line Liquid Eye Pen has a slim, tapered tip that offers the perfect amount of flexibility to work with the curve of your lash line. perfect for thin or thick lines. Intense formula glides on smoothly. Flow-through pen provides easy, mess-free application. Up to 16 hour wear. You've got a look. We've got a tip for it..