Golden Hard MSA Varnish dries to a tough, non-flexible protective finish. The UVLS system provides increased resistance to the harmful effects of ultraviolet radiation, making the product suitable for exterior as well as interior application. For restoration purposes, the varnish may be removed with aromatic solvents.Hard MSA Varnish can be used over a wide variety of paints, including acrylic, oil, alkyd, egg tempera, watercolor and casein. As a topcoat for acrylics, it provides a harder, lower tack surface that is much less susceptible to dirt and much more mar resistant. When used on an inflexible support it can also be mixed with oil and alkyd paints to accelerate drying and improve resistance to cracking.Hard MSA Varnish (Gloss) dries to a highly reflective finish. Hard MSA Varnish (Satin) offers moderate reflection, similar to most matte varnishes. The Hard MSA Varnish (Matte) finish is exceptionally flat. The different finishes can be intermixed, or used sequentially, to achieve the desired sheen.