ZIG GLUE CRAFT PENS. These dual-action ZIG Memory System 2 Way Glue Pens are ideal for all your paper crafting projects. Glue is blue when wet, giving a permanent bond. Or wait a few moments until it turns clear, then it will be re-positionable. Main components: acrylic emulsion and water. Water-based, photo-safe, acid-free, Xylene-free. For permanent use: use the adhesive while the glue is blue. Great for writing on foil balloons or any kind of crafting & scrapbooking. Glue is blue when wet and clear when dry. ZIG GLUE CRAFT PENS A dual-action ZIG Memory System Two Way Glue pen ideal for any of your crafting projects. Great for writing on foil balloons or any kind of crafting & scrapbooking. Glue is Blue when wet and clear when dry. Can be used for a permanent wet bond, or a temporary dry bond.