Adjustable after applying. Paper; Photo safe. Glue stick is non-toxic, safe and fast drying. No-mess and no-leak. Cleans off hands and household surfaces with soap and water. Outstanding for paper. Restickable formulation allows you to adjust and move bonded items after application. Acid free (pH above 7.0). Cap size meets regulations to reduce choking hazard in children under 3. Non toxic and cap size regulations are defined in the Federal Hazardous Substances Act. Conforms to ASTM D-4236.