Posca Acrylic paint markers are non-toxic, water-based, and can be used on almost any surface. Alcohol and solvent free, opaque paint covers well, is blendable, and dries quickly. For use on paper, glass, cardboard, wood, porcelaine, metal, textiles, ceramics, plastic, and more - all without priming. They can even be used like watercolor when mixed with water and a brush. The PCF-350 brush tip marker has a soft tip for hard to reach areas and for creating flowing painterly linework. Single marker, White.