CLIO Superproof Pen Liner delivers intense color that lasts all day. This eyeliner features a smudge-proof and waterproof formula for long-lasting wear, available in various shades of brown and black to complement any eye look. The pen's fine tip allows for precise application, creating thin or bold lines with ease. Achieve killer definition with this highly pigmented, budge-proof formula that stays put through humidity, sweat, and tears.