Eyeliner is a kind of makeup product, used to deepen and highlight the color of the eyes, make the eyes refreshed.  Shaped like a pencil.  A special pencil sharpener or knife can be used to remove excess wood and improve the thickness of the pen tip.  

Black liquid eyeliner

A decent Black liquid eyeliner is one that was missing from my vanity. Since the arrival of colored eye pencils from Faces I rarely use basic black shade on eyes but at times I do want to go back to basics. I got a Faces Long Wear Eye Pencil in Solid Black which is an intense black liner but I couldn’t draw thin lines with it and winged style eye liner seem impossible.