This glue allows for flexible temporary bonding. Environmentally friendly and acid-free. Ideal for use in studios, offices, or at home. Repositionable, without leaving stains. Ideal for gluing artwork, posters, stencils, etc. You can achieve a stronger bond by applying several thin coats to both sides of the work. Does not corrode polystyrene. Instructions for use: Hold the can about 20/30 cm from the surface. Press the button firmly and spray a thin film onto one surface only. Wait a few seconds until the adhesive becomes tacky. If necessary, spray twice for thicker materials.