Delivers intense precision for the most defined line. It features an ultra-fine, 0.4 millimeter, brush felt tip to deliver precise definition in one single stroke. The ink intensity pen's continuous flow provides smooth, even lines for the perfect cat eye. The highly pigmented formula will keep your look all day, for up to 12 hours. Waterproof, smudge proof, fragrance free, ophthalmologist and dermatologist tested. Suitable for sensitive eyes and contact lens wearers.