Made with a pure water-soluble acrylic resin, Acryla Gouache is brilliant, lightfast and permanent, and moves, reacts, blends and feels like traditional gouache. However, unlike a traditional gouache which is made with a gum Arabic binder. It does not have a fragile paint film, is compatible with any water-soluble media and is waterproof when dry. It also does not shift in color tone from liquid to dry color. Ideal for artists, designers, illustrators, students and hobbyists. This 102-color set includes 20ml tubes of all the colors in the Acryla Gouache line except for primary magenta, primary yellow, primary cyan, primary white and primary black.