Here are three descriptions about this waterproof eyeliner pen: 1. Ultimate water resistance, long-lasting without smudge This eyeliner pen has an extremely strong waterproof performance and can keep the makeup intact even in a damp environment. Its special formula ensures that the eyeliner does not smudge for a long time and remains clear throughout the day. 2. Ultra-fine pen tip, easy to draw With an extremely fine pen tip design, it can easily draw fine eyeliner. Whether it's filling the gaps between eyelashes or creating an upturned eyeliner, it can handle it with ease. 3. Quick-drying formula, smooth and fluid: This eyeliner pen uses a quick-drying formula, which sets the makeup quickly after application to prevent smudging. Its smooth texture makes writing more fluid and easily creates a natural makeup look. Notes Before use, please ensure your eyes are dry and avoid applying eyeliner directly to moist eyes. 2. After use, please close the pen cap tightly to prevent the pen tip from drying out or getting contaminated. 3. If it accidentally gets into your eyes, please rinse immediately with clean water. Materials and Design: Made of high-quality waterproof materials, the pen tip is finely polished to ensure a smooth experience during use.