Artists' Retouching Varnish by Winsor & Newton is a UV-resistant varnish that gives temporary protection to recently completed oil paintings. This clear liquid is non-yellowing and quickly dries to a glossy film. Winsor & Newton reccommends that you ensure your painting is touch dry before using the varnish and to use the varnish thinly as it is not a medium.

 How to use Artists' Retouching Varnish