Made with damar resin, C Roberson Retouching Varnish will improve the appearance of patches of dull colour caused by your paint sinking into the surface.
It will also help the next layer of colour applied to adhere to the surface, ensuring the problem does not continue.
You can also use C Roberson Retouching Varnish as a temporary varnish on new paintings.
UK shipping by road only. Not available for International or Northern Ireland delivery.