What it is: MAC Pro Longwear Lip Pencil is a new form of long-wearing lip pencil technology that saturates lips in rich color. What it does: MAC Pro Longwear Lip Pencil glides on fluidly and adheres instantly, defining the lips with an immediate release of rich, saturated color. The smudge- and transfer-proof formula wears for up to eight hours, won't feather and stays color-true. How to use: Apply directly to lips before or after your chosen lip color. Style Name: Mac Pro Longwear Lip Pencil. Style Number: 387943. Available in stores.