Liquitex Permanent Gloss Varnish (Rigid Surface) is a high gloss varnish used to protect artwork. Ideal for use over any acrylic painting on a rigid support. Do not use on flexible surfaces such as canvas as the varnish will crack. It is permanent and highly durable for superior protection. Increases gloss, depth and intensity of colors it is applied over. Translucent when wet, clear when dry; non-yellowing. The easy to use and clean up water-based formula is sandable for furniture grade finishes. For interior use only. 4oz. jar.