Pbo Acrylic Markers contain an acrylic, water-based paint that adheres to a variety of surfaces: paper, cardboard, paper-mch, wood, metal, terra cotta, plastic and canvas. Available in a variety of tip sizes, every marker has a pump mechanism that regulates the amount of paint that is dispensed, allowing for precise application.The paint in Pebeo Acrylic Markers is permanent and extremely lightfast. It dries to the touch within 1030 minutes, and becomes fully dry within 612 hours.