Glue stick forms a strong, long-lasting bond with just a single stroke. Solvent-free, acid-free design assures that your precious photos & memories can be cherished for a long time. UHU Glue Sticks are safe for child use because they are nontoxic & conform to ASTM D-4236. UHU Glue spreads easily & sticks immediately. Ideal for all kinds of crafts & projects, the glue goes on appearing in blue for precise application & dries clear. Less moisture in the glue stick ensures that your paper won't wrinkle or bubble & will lie smoothly giving your creation a professional touch. Unique patented airtight screw cap prevents the product from drying out. Use glue on paper, cardstock, cardboard, fabric, envelopes & photos. The glue washes easily with soap & water.