Sakura 3D Glaze clear pen is used to blend any of the other 14 colours to lighten and shade. 800  Sakura Glaze pens are designed to use on acetate,glass, plastic to give a ‘glassy’ appearance. Perfect for colouring in outline peel off stickers. 0.8mm ball with a 0.4mm line Acid free  Will not smear or feather when dry Waterproof and chemical proof Fade resistant Does not bleed through most papers.