Which eyeliner lasts longest and is most waterproof?

Several picks here market waterproof, smudge-proof wear, including the Stila Stay All Day liquid liner, the Revlon ColorStay pencil, and the Urban Decay 24/7 gel pencil. The Stila and Urban Decay formulas carry the strongest long-wear reputations in the ratings we read, but our data does not include independent wear-time lab measurements, so treat manufacturer 'transfer-proof' claims as marketing rather than verified results.