Colorstay Eye Liner #201-Black glides on with incredible smoothness and sticks with you for up to 24 hours! Ophthalmologist-tested, because safety always matters. New, improved eyeliner stays where it's supposed to for up to 24 hours - plus, it's waterproof! Get the drama and definition you've been craving from a pencil eyeliner with this lightweight formula. There's a built-in sharpener on the opposite end, so you always get precise lines. It is recommended to twist the body of the waterproof eyeliner pencil until you have enough color at the tip to work with. Glide it along your lash line, starting from the inner corner of your eye and working outward. Create intense and dramatic liner styles like cat eyes, or get a softer, smoky eye makeup look by using the smudger tool right after applying. Keep the pencil sharp with the built-in sharpener.