Museum Liquid Acrylic Colours are water based, food safe and non-toxic paints. All colors are intermixable and self sealing. Dries to a flexible, durable surface with a satiny finish. Museum Acrylics dry fast and may be painted over immediately. Suitable for all painting techniques. Adheres to most clean, dry porous, surfaces including paper, clay, plaster, wood, papier-mache, polystrene, etc.