Formulated with the best pigments available, Vallejo Fluid Acrylics are prized for their beauty, stability, and excellent lightfastness. The pigments (which range from organic and inorganic pigments including quinacridones, cobalts, and pyrroles) are dispersed in a 100% acrylic polymer emulsion. The fluid acrylics don't contain any fillers or matting agents, so depending on the nature of the pigment, colors will dry satin or matte, opaque or transparent. There's minimal color shift from wet to dry. Acrylic Artist Fluid Colors have a low-viscosity formula that brushes on as a smooth, even film of color. They dry to a flexible, waterproof, UV-resistant finish, and won't yellow over time. Brilliant and versatile, Vallejo Fluid Acrylics are ideal for pouring and dropping techniques, staining and glazing, shading, or as an alternative to watercolors. You can also dilute the colors and use them for airbrushing, or mix them with mediums and texture gels for added effects. Conforms to ASTM D-4236.