Auto Air Colors is a durable paint intended for use as a basecoat and graphic paint for automotive finishes and other exterior application. Auto Air Colors are meant to be top coated with a durable, urethane clear. Auto Air Colors are compatible with all urethane, waterborne and water-based paint systems. Auto-Air represents state of the art technology in a water-based airbrush color line. Designed for an array of applications. Permanent, light-fast, and non-toxic, adhering to metal, fiberglass, vinyl, wood, glass, concrete fiberglass, and more. Water Based - Non-Toxic Buyers from Northern regions, please note: this is water-based paint, and it is possible to spoil it by freezing. We are shipping from Florida, and it is not likely to freeze it in a local postal car in any season, but we can not be responsible for your local postal services. Thank you for understanding.