This range of colours is manufactured using Sennelier Artists quality pigments and superior quality natural gums. These Artists' quality Gouache colours have exceptional covering power and give deep and opaque colour. All gouache colours are mixable and have good lightfastness with he exception of a few colours necessary for illustration. Colours can be applied with a brush or airbrush. Water-soluble, they can be mix3ed with watercolours and inks to obtain other combinations of opacity or transparency.