MSA (Mineral Spirit Acrylic) Varnish with UVLS (available in Gloss, Satin & Matte) is a Mineral Spirit based Acrylic resin system that forms a tougher, less permeable film than waterborne acrylic varnishes and can be applied to acrylic, oil and alkyd painted surfaces. It reduces dirt penetration and surface marring, offering an extremely level film with less foam and fewer pinholes.