Art Spectrum Gouache is a resoluble, quick-drying, waterbased colour of excellent opacity with a consistent, velvety finish. Made in the classic tradition, all colours are carefully triple-milled to ensure maximum brilliance and even coating of pigments. This method has been proven by the test of time. Concentrated pigment colour ensures a little goes a long way.Art Spectrum genuine artist/designer gouache can be:- diluted with water for watercolour effects- applied in smooth, vibrant fields of colour- used for fine, precise, detailed painting- used to create spontaneous work with free-flowing brush strokes.Art Spectrum gouache is the easiest artists' colour to use. Mix gouache with just enough water on the palette to achieve a smooth, even flow when painted out. Avoid heavy impasto. Dried gouache on the palette can be rewetted and used when required. Use in combination with:- Watercolours- Soft Pastels- Liquid Spectrum and Pigmented Inks- Charcoal and other drawing media.Surfaces for Gouache- All watercolour papers, fine medium or rough, (Acid free, 100% Rag paper for permanency)- Drawing papers and boards colourfix papers and boards- Canvas and panels - preparation with Art Spectrum Pastel Primer or Artist Gesso will provide good adhesion, absorbency and flexibility- Consider using tinted or coloured surfaces and papers.