The Surface Primer can be used directly or mixed with auxiliary products like Varnishes, Mediums, etc. It is recomended to avoid mixing Surface Primer with alcohol and/or solvents. Apply with a brush or an airbrush. Perfect as a ground for plastic, brass, resin, etc. Surface Primer can be cleaned easily using water; for a more thorough cleaning it is recomended to use Airbrush Cleaner.