Chanel Stylo Yeux Waterproof Long-Lasting Eyeliner is a waterproof, smudge-proof eyeliner delivers long-lasting definition with a twist of the wrist: Colour winds up when you need it, winds down when you don't. Gentle, soft, silicone-enriched formula delivers smooth, even lining. A built-in sharpener at the opposite end detaches for quick refreshes.