Our Stay Sharp technology helps you keep your tips sharp for a precise application every time. The integrated sharpener inside the cap sharpens the tip to perfection and neatly holds onto the shavings each time you close your liner. Get gorgeous brows without the mess! Waterproof, smudge-proof and long-lasting. Fine tip for a precise application. Mess-free: lead shavings are stored in cap. Self-sharpening eyebrow pencil.