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