Remember that protective foil and silica pack? To prevent your Flex Paste from drying out, replace the protective foil by pressing it on the surface of the material. It is also very important to replace the silica pack too, to prevent Flex Paste from drying out.
Continue pressing outwards so the foil remains in constant contact with your Flex Paste. Make sure no air pockets have formed between the foil and the product.
Once you reach the edge of the tub, tuck the foil around the inside perimeter. Now replace the silica pack and secure the lid tightly.
To increase the life of your Flex Paste, store it in an air conditioned, humidity-controlled environment. Remember to remove any dry Flex Paste that may have formed on the inside of the container.