Enduro-Var wood finish is a self-crosslinking, oil-modified, water-based polyurethane that looks more like an oil varnish than a water coating. It ambers slightly, is highly water resistant, and is both sprayable and brushable. Enduro-Var water-based topcoat adheres well ONLY over WATER STAINS, DYE STAINS and RAW WOOD. Use Enduro-Var over any other surfaces at your own risk.