Waterproof Felt-Tip Eyeliner Pen with Quick-Drying Polymer Film Nouba Skeyeliner is a water-based liquid liner housed in a pen with a long, thin felt tip. The pigment lays down in a single stroke and is locked in by film-forming polymers that dry to a flexible, water-resistant film, so the line stays put without smudging or crumbling through the day. Why Choose It? Long, thin felt tip draws anything from a hairline along the lashes to a buildable graphic stroke Water-based formula with film-forming polymers — decisive pay-off in a single pass Flexible film dries quickly and resists water and smudging once set Carbon Black pigment delivers a deep, opaque finish How to Use? Pull the eyelid lightly taut and rest the felt tip flush against the lash root, starting at the inner corner and working outward in short connected strokes; build a second pass over the first for a thicker line. For a winged finish, extend the stroke slightly past the outer corner before the film sets. Cap the pen firmly after each use to keep the tip from drying out, and remove with a gentle eye makeup remover at the end of the day.