Our waterproof eyeliner pen (bronze color) is carefully formulated with acrylate copolymers and ethylene glycol. Designed specifically to enhance water resistance and the longevity of makeup. The usage method is extremely convenient: Sharpen the pen tip before use to ensure it is sharp enough. Gently draw lines along the contour around the eyes to create delicate eye lines. Easily draw smooth eyeliner with a clear contour that is not easy to smudge. And it has a long-lasting color-locking formula, which can prevent sweat and oil and is not easy to cause makeup to come off.