What it is: A double-ended eyeliner with a semi-matte liquid liner on one side and a smooth gel eyeliner on the other, its formula offers high-impact color and 16-hour wear.What Else You Need to Know: Available in four shade duos: an ultra-black liquid liner paired with a color gel eyeliner. The black liquid eyeliner has a flexible fine tip for high precision in each stroke. Flip the eye pen to reveal a retractable gel eyeliner pencil that delivers smooth, even lines from thin to bold.