Stila's #1 selling waterproof liquid eyeliner formula, now with an even finer, ultra-thin tip! Line and define, with precise strokes. Stay All Day Waterproof Liquid Eyeliner - Micro Tip is perfect for filling in the spaces between lashes to quickly and easily make lashes appear fuller. The formula glides on with ease, dries quickly and won't smudge or run, day-into-night.