A lip lining pencil has a harder consistency than a lipstick and is used to outline the lips so as to clearly define thier shape.It is a great aid, if your lips are not perfectly shaped; you can make the lips appear thinner or fuller or you can draw an uplifted corner if your lips droop.The outlining of the lips in addition, prevents bleeding of the lip product into the tiny lines that are present around the mouth, giving the lips a sharp, defined outline.