Designed to help your prints look their best for years to come, Speedball Screen Printing Gloss Acrylic Overprint Varnish is a non-yellowing, acrylic-based topcoat made for use over acrylic- or water-based screen-printing inks on paper and wood. It helps protect finished prints against scuffing, weathering, and moisture while adding a glossy, permanent finish. Easy water cleanup makes application simple from start to finish.