Varnishing with a brush is tricky enough without the uncertainty of whether or not the brush will lay down the finish you envision!

The Gamvar Varnish Brush is synthetic purpose-built to support the application of Gamvar gloss, satin and matte varnishes. Its synthetic bristles are correctly balanced between softness and stiffness, and will deliver a consistent application of your Gamvar finish of choice, every time.
 
Wait until the thickest areas of a painting are thoroughly dry and firm to the touch before varnishing.