Winsor & Newton Artists Matt Varnish
A superior quality UV resistant artists matt varnish for oils which is quick drying, non-yellowing and does not bloom or crack. Do not use until a painting is completely dry. With Oil Paint this is between 6-12 months. The top surface may be touch dry but lower layers may still be in the drying process and, whilst in this state, any varnish applied may soon crack.
Removable with Artists White Spirit or Distilled Turpentine. Do not use as a medium.