From the Manufacturer

The consistency of Modelcolor allows for an extremely smooth and uniform paintfilm, with no trace of brushstrokes. Professional model painters always work with a wet brush and dilute the paint with water or Mat Medium, applying many thin layers to achieve depth and shadows. Colors may also be diluted with other Mediums for glazes and layered applications. The waterbased formula of Modelcolor has been specifically developed for adherence on difficult surfaces such as metal and plastic, but the product is not toxic, not flammable, and does not give off noxious fumes. Errors can be corrected immediately with water or alcohol Modelcolor dries quickly to a matte, even and waterproof finish. Exact drying time depends on the temperature and humidity of the environment, on the surface which has been painted, and on the thickness of the paint layer - although the colors are dry to the touch within minutes, the water content keeps on evaporating, and the paint does not acquire its true permanence until several weeks after application. Vinyl acrylic colours, very highly pigmented, formulated for models and miniatures. Model color is indicated for all surfaces, and especially formulated to adhere to plastics and polyesters.