Deco Art-Media Crackle Glaze: Clear. A water-based, fast-drying topcoat that creates eggshell cracking pattern as it air-dries. Once the glaze is dry, cracks can be enhanced by using media antiquing cream (sold separately). Can be used on cardstock, papier mache, canvas, wood. This package contains one 4oz jar of media crackle glaze. Conforms to ASTM D 4236. Acid free. Made in USA.