Retouching varnish is a UV resistant gloss varnish which gives temporary protection to recently completed oil paintings, however unlike artists’ varnishes it is possible to paint on top of Retouching Varnish.
Winsor & Newton professional retouching varnish is a glossy varnish resistant to UV light that gives temporary protection to your oil paints at the same time, unlike other varnishes, it is possible to paint on this applied varnish.