The formula contains a new acrylic resin with properties until now impossible to obtain in a waterbased acrylic. The resistence, hardness and covering power of Model Air is superior to any known acrylic for airbrushing. The pigments used for airbrush colors need to be ground to the finest possible consistency to avoid obstruction of the airbrush valves. The revolutionary milling process of the pigments used in the Model Air formula gives the modelpainter technical assurance and finest texture when applying the colors to the model, and produces a very superior quality when applying the colors with a brush for miniscule details, washes and transparencies and layered application of diluted glazes. Colors can be mixed with one another and diluted with water, Model Air Thinner (71.061) or Varnish, according to the effect desired, but we recommend the use of Airbrush Thinner since this product conserves the properties of the colors. Model Air adheres exceptionally well to all surfaces. The adhesion of Model Air to resin models, plastics, steel and white metal is extraordinary. Once protected with varnish, (Gloss, Matte or Satin) Model Air can be overpainted with solvent based enamels or oilcolors: the colors withstand cleaning with turpentine and even a light wash with alcohol. The resistance to abrasion of the colors, once varnished, is superior to any other waterbased acrylic.