Montana 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. Available in gloss, semi-gloss, matte finish. 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.