Revlon's ColorStay Lipliner is highly sought after for its rich colour, lasting ability and definition. No feathering or bleeding! You also get a tidy little built in sharpener for the ultimate convenience when you're out and about.
Pro tip for applying lip liner
Make sure your lip liner is reasonably sharp, and then trace your lip line using light, short strokes. Go outside your lip line if you want fuller lips. Then once you have lined your outer lips, you may wish to blend the liner into your lips for a nice natural effect. For more colour, fill in your lips with the same lip liner, before applying your fav lip stick on top for maximum gorgeous lips.