ATOM-20531 ATOM Thinner and Cleaner with Retarder (500mL)Thinner specially formulated for acrylic paints which includes retarder for slowing down the drying time. Use this thinner to get the best results with the airbrush and to prevent clogging. It can also be used for brush painting. We recommend adding 30 % thinner for airbrushed base coats. You can increase this thinner ratio as much as necessary to apply transparent coats, glazes, shading or other effects. Provided in a clear 500 ml container. This