She suggests that we always use a lip liner to line the lips, and go slightly over the natural lip line to give the appearance of fuller lips. When you fill in the colour, it is important to go over the lip liner. If you want to customize the shade of your lipstick, you can add foundation to your lipstick, this will make your lipstick duller.. SUPER STAY INK CRAYON - Matita per le labbra - keep it fun. CHF 9.00. 1.5 g (CHF 600.00 / 100 g).