Matisse Structure Formula is a rich impasto acrylic paint that is ideal for application with a brush or palette knife for striking textured effects. When applied undiluted by brush or knife, it gives a rich deep impasto finish. The colours may be thinned with water for washes and watercolour effects. It is water resistant, permanent and totally flexible in light and heavy impasto applications. Only the finest quality pigments and ingredients are selected for the Matisse range of premium acrylic colours. All have the highest lightfastness rating of ASTM 1 or 2 and are archival quality - so you can create with confidence knowing your artwork will stand the test of time. Each are fully compatible with the range of Matisse Mediums, working together to create a highly versatile painting system for all artists. Matisse Structure Formula Acrylic Paints are vegan friendly (except Ivory Black).