Urban Decay Ink For Eyes Waterproof Precision Eye Pen BLACK Full Size Eyeliner Create envy-inducing cat eyes with ease. Ultra-waterproof and crazy-precise, our fine-tipped pen creates glossy, sharply defined lines that last all day. Draw intense, shiny, blacker-than-black lines with absolute precision. Ink for Eyes has an ultra-fine tip for a smooth, controlled application every time. Whether you want razor-thin lines, winged cat eyes or bold, dramatic lines, Ink for Eyes.