Our jigsaw puzzle glue set is carefully formulated with hydrogenated castor oil and epoxy resin. Designed specifically for rapid curing， complete drying to form a permanent adhesive， allowing the puzzle pieces to be displayed immediately without falling apart. The usage method is extremely convenient: Place the puzzle face up and put paper underneath to prevent the glue from seeping onto the table through the gaps. Put on gloves and use a brush to evenly apply an appropriate amount of this product on the jigsaw puzzle. Apply the glue evenly to avoid any accumulation and ensure that the glue is evenly spread in the gaps. Let the glue cure into thin sheets. It takes about 15 to 20 minutes to apply thinly. Thicker application will take longer. Your jigsaw puzzle is done. And it adopts a highly transparent protective layer， which enhances the color saturation of the puzzle， resizes fading and scratches， ensuring that every detail is clearly visible， evoking the quality of museum-level preservation.