MTN PRO canvas spray varnish is used as a final coat to protect oil and acrylic paints against humidity, grease, dust and contamination. This allows the work to maintain its properties without yellowing or cracking. The spray dries very fast through evaporation and protects your art projects. It protects your graffiti art, fine art, and collectibles from smudges, dirt & dust, and some light damage extending the life of your work for years to come. See below for more Product and Usage information