Line and define your eyes with Maybelline's Master Precise Skinny Liner in 'Black', an automatic, waterproof gel eyeliner pencil with 1.8mm micro-tip for ultra-precision application.. Delivering sleek, intense colour, the eyeliner expertly defines your eyes with long-lasting results. Staying put for up to 24 hours, the liner will accentuate your natural eye shape, allowing you to create thick to thin lines for subdued daytime looks or sultry cat eyes.