The unique formula, poured into a slim mechanical component, has the malleability, intensity and staying power of a traditional gel liner. No pot, no brush, no clean-up required. The waterproof, transfer-proof and long-lasting formula delivers extended wear. The precision 1.5MM tip ensures effortless control, and allows for tightlining in between lashes. Two clicks is all you need to line the eye. Each advanced mechanical pencil lasts for approximately 17 to 20 uses. Available in 5 shades. Op.