Montana GLOSS VARNISH is an acrylic based, acid-free and quick drying clear varnish. No yellowing or de-saturation. For interior and exterior use. Can be used for art, hobby, crafts and DIY. Gloss level shown on donut (see top of can). Protects and fixes paint on surfaces like canvas, paper, charcoal drawing, bast fibre, wood, photos, etc. Protects against oxidation.