Winsor & Newton Professional Acrylic Gloss UV Varnish provides a protective gloss finish against dirt, grease, pollution, fading, and colour shift. It also contains a UV protective agent which improves lightfastness and protects from other UV damage such as fading or colour shifting in tone. This varnish may even be used to varnish non-lightfast media such as digital print or giclée prints for example.