This Art Spectrum Gouache is made using a water based formula with high pigmentation for exceptional coverage. It delivers a consistent, velvety finish and can be used for detailed or precise painting with free flowing brush strokes. You can achieve a variety of painting techniques by diluting your gouache with water or mixing colours. It is ideal for use on watercolour papers, drawing papers, canvas and more. It has a high pigmentation to achieve bright, bold and vibrant colours. You can dilute each colour with water to create watercolour effects or simply mix colours with white to create different shades. The gouache is ideal for use on mixed medium artworks with soft pastels, pigmented inks, charcoal and more. This gouache is quick drying and dries to a consistent, matte finish. Each tube of Art Spectrum Gouache contains 22.5 mL. This gouache is Pthalo Blue coloured.