NYX Slide On Lip Pencil Lip Liner 24 Knock Em Red. NYX Professional Makeup Slide On lip pencil will prevent unwanted lipstick from melting and help give your lips a perfect shape. Properties: perfectly outlines and highlights the lips, lasts a long time. How to use: Mark the lip contour with a pencil, then apply lipstick or lip gloss. You can also fill your entire lips. Experience NYX Slide Slide On Lip Pencils in 7 ultra-bold shades that will make your lips stand out. Our creamy, long-lasting formula glides on easily and never needs sharpening. Create beautiful, vibrant looks that exude confidence. 1 X NYX Slide-On Lip Pencils 7 Shades Available Ultra-Bold Shades Creamy Formula No Sharpening Confident Looks