ACTÍVA's CelluClay is an Instant Papier Mache made with a virgin recycled paper medium, which mixes easily and molds quickly. CelluClay paper mache is very easy to use: simply add water and it air dries! This instant paper mache is completely non-toxic and gluten-free, and adheres to almost any surface. CelluClay is very versatile as once it has air dried it can be sanded, sawed, and nailed. Also, wet pieces of the paper mache can be added to dried pieces. CelluClay can also be stored for several days in the refrigerator in a sealed plastic bag. Each pack includes 5 lbs of White CelluClay.