This paint is opaque, matte and dries faster and darker than watercolour. Note that it is also water-soluble, so it won’t cake onto brushes and is easy to clean up. It is often used by commercial artists for posters, illustrations, comics and other design work. Watercolour brushes and watercolour paper can be used. The paper beneath the gouache won’t be as visible as it is when using traditional watercolors.