Eye Studio Master Precise Liquid Eyeliner boasts an ultra-fine 0. 4-millimeter brush tip, delivering precise and hassle-free application. The rich, black pigment offers intense color that remains vibrant throughout the day, resisting water and smudges. Tested by ophthalmologists and dermatologists, this eyeliner is safe for sensitive eyes and contact lens wearers. Achieve flawless, controlled lines effortlessly and enjoy a confident look from morning till night.