Check the listing for details. Activa Products CelluClay Instant Papier Mache. Condition: New. Listed at 27.28 USD. This low cost instant paper mache clay is made with a virgin recycled paper medium which helps it mix easily and mold quickly. CelluClay is ACMI certified as AP nontoxic. Using CelluClay does not require any special tools or firing, just simply add water and allow it to air dry naturally. Once dry, it can be sanded, sawed, nailed, or painted. Wet Celluclay can also be added to areas already dried. Once mixed, any unused portions may be stored for several days in the refrigerator in a sealed plastic bag. CelluClay adheres to almost any surface and can be combined with a variety of materials, making it the perfect versatile addition to any project.The original gray is from virgin printed paper. The bright white is from virgin unprinted paper.