Our brown waterproof lip liner pen is carefully formulated with polyester-5 and starch-octenyl aluminum succinate. Specially designed to create a rich matte texture, with vivid and bright colors, easily outlining a three-dimensional lip shape, highlighting personal charm, and doubling the fashion level. The usage method is extremely convenient: 1. Use a lip liner pen to draw the desired contour shape from the upper sides of the lip peak position. 2. Then draw the lip shapes to the left, right and middle respectively. 3. Finally, fill in the outline with a lip liner pen. Moreover, it adopts an advanced waterproof formula, locking in color all day long, not afraid of sweat and oil, maintaining a delicate lip makeup for a long time. Its unique quick-drying technology dries immediately upon touch, reducing the trouble of smudge. The color remains bright and fresh for a long time and is not easy to fade, maintaining a perfect lip shape.