Holbein Designers' GouacheHolbein Designers' Gouache is made from pigments selected for density, saturation and lightfastness. It's great for illustration, design work and teaching color theory. Holbein Gouache offers consistent, reliable results without darkening, muddiness, bleeding or cracking. Its opacity comes purely from pigment density and colors remain completely opaque when layered. And since it's water-soluble, gouache mixes wellwith any aqueous medium.