All surfaces exposed to sun, wind, dust, rain and snow, experience a change in color, a loss of intensity, a dulling and general fading. For the model painter, these changes in color are very difficult to reproduce, and to achieve these effects on a model, washes are the perfect solution. The washes can be mixed together to achieve further variations of shade; they can be used with airbrush or brush, according to the model and the effect desired. Washes are perfect for blending the edges of camouflage colors with the base colors of a model, and they can be mixed with pigments to obtain a wide range of effects such as oil and flaked rust, mud, earth, dust, moss, etc. When the washes are mixed with acrylic colors, they further help achieve the appearance of heavy wear and weathering. Model Wash has been formulated with a modified acrylic resin so that the superficial tension is similar to that of the traditional solvent-based washes, but with the advantage of working with a water-based medium. Average drying time is around 20 minutes. If several layers of wash are to be applied, it is best to wait around 40 minutes between applications. Painting tools are cleaned with water. Packaging: Bottles of 35 ml. (1.18 fl.oz.) with flip top.