Winsor & Newton - Oil Alkyd - Superfine Damar Retouch Varnish - 75 ml - Winsor & Newton Superfine Dammar Retouching Varnish for oil color is for the temporary protection or recently finished oil paintings. Let paint dry at least a month and apply thinly. Do not use in damp conditions or as a medium. Contains Dammar resin and White spirit.