Derwent Academy Gouache Paints are medium in thickness for great coverage in your art. The paint is completely intermixable so you can create your own hues or dilute it with water to implement watercolour effects. The paint is finished with a smooth, matte texture. The paint is easy to mix so you can experiment with a range of effects. It can be diluted with water for watercolour effects. There are 12 gouache paints included in this set.