NEW Lameila Exquisite Black Eyeliner & Brush Recommended Uses For Product For Eyebrow, For Eyelining Color Black Material Synthetic Item Form Pencil Handle Material Plastic Precision: eyeliner pens are designed with a fine-pointed tip that allows for precise and accurate application. This makes it easier to create sharp lines and intricate designs. Long-lasting: eyeliner pens are formulated to be long-lasting and smudge-proof. Once applied, the eyeliner will stay in place for several hours without fading or smudging. Waterproof: Many eyeliner pens are also waterproof, which means they won't run or smear if they come into contact with water or sweat. This feature is particularly useful during hot or humid weather or if you plan on wearing the eyeliner while exercising.