Gamvar Picture Varnish saturates and adds greater depth to the colours in your painting, giving it a unified and protective matte, semi-gloss or satin surface. Developed in collaboration with the National Gallery of Art, Gamvar goes on water-clear, stays water-clear and can be easily and safely removed with Gamsol. Virtually odourless, it can be applied when the thickest areas of your painting are thoroughly dry and firm to the touch.