Alvin & Co. 8693351 REEVES GOUACHE 12 ml SET/18 Reeves Fine Gouache Colors are traditional water based opaque colors which give flat, smooth washes. High quality pigments and economical price make these paints perfect for any artist from beginner to advanced. These paints feature good tinting strength, good covering power (opaque) , good lightfastness and a uniform matt finish. Non-Toxic