Hypoallergenic Formula: The eyeliner pen has a hypoallergenic formula that is gentle on sensitive skin., Full Coverage: The eyeliner provides full coverage for a smooth, even line on the eyelid., Easy Application: The pen-style eyeliner glides on smoothly for quick and easy application., Long-Lasting: The waterproof formula stays put on the eyelid for hours without smudging or fading., Versatile: The black color works well with both light and dark eyeshadow for a polished look.