This mineral spirit based acrylic varnish forms a tougher, less permeable film than waterborne acrylic emulsion varnishes. Ultraviolet light stabilizers reduce damage caused by the sun. It reduces dirt penetration and surface marring, offering an extremely level film with less foam and fewer pinholes. For interior or exterior use. For thinning it is not recommended that you use an oderless mineral spirit such as as Gamsol or Turpenoid. We recommend using Stoddard solvent (show below) or it's equivalent.