Glo in the Dark Dimensional Writer adds luminescence and dimension to any craft project. Use it alone or mix it with light-colored acrylic paints to create the perfect glow. The precision tip makes it easy to write words or draw shapes. You can use the Glo in the Dark Dimensional Writer on fabric, plastic, glass, posterboard, paper mache, canvas, craft foam, and more. Each bottle contains 2 fluid ounces.