Define your eyes with bold precision using the Lyon Beauty USA Jet Black Eyeliner Pen. Featuring a slender, flexible brush tip, this liquid eyeliner glides smoothly along the lash line, delivering intensely pigmented, jet-black color in a single stroke. Its satin finish adds a touch of elegance, while the waterproof formula ensures all-day wear without smudging or fading. Whether you're aiming for a sleek line or a dramatic wing, you’re in full control—just adjust the pressure to customize the thickness with ease.