Gamvar Picture Varnish saturates and gives greater depth to the colors in your painting, giving your work a unified semi-gloss 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. Odorless Ready-to-use Apply the varnish when the thickest areas of your painting are thoroughly dry and firm to the touch