Posca markers are a water-based paint marker for all materials and all uses. As long as the paint is wet, colors can be mixed on the work surface by blurring with the tip or a brush to create infinite gradations of color. If the tip is stained, just clean it and re-prime the marker to restore the initial color. Dense and opaque, Posca paint is ideal for layering! Dark colors can be applied over light colors or light colors over dark. Thanks to its fast drying time, layering can be carried out with no smudges.