SELF-SHARPENING: Just like our award-winning Always Sharp Eye Liners;our lip liners have a tiny built-in sharpener in the tip of the cap;so they self-sharpen every time you twist off the cap;GLIDE-ON SHAPING: Shape matters! Enhancing your shape is a cinch when you have a precise tip that always glides on-whether you need to accentuate your cupid's bow for fullness;or line your inside edges for a slimming effect