Ultimate waterproof formula provides smudge-proof, humidity-proof, flake-proof and cry-proof wear, featuring an ultra-fine brush-tip that delivers any look from a thin line to a bold, dramatic stroke that last up to 16 hours. It glides on seamlessly and smoothly, while delivering intense, highly-concentrated pigmentation in one easy swipe. This innovative eyeliner features a tank delivery system that allows the perfect flow of pogment with every application offering precision accuracy, ease of application and extended wear. Long-lasting, waterproof, smudge-proof and break-up proof.