Posca Marker by Cowling Wilcox: Creative Tool for Artists and Crafters Artists use Posca marker for painting, illustrations, calligraphy, and mixed media compositions. Their opaque and quick-drying formula allows adding highlights, details, and texture overlays on acrylic or watercolor paintings. Posca markers are ideal for graphic design sketches and conceptual art where vibrant, clean lines matter. https://www.monu.org/posca-marker-by-cowling-wilcox-creative-tool-for-artists-and-crafters/