Grumbacher Picture Varnish is a final varnish that produces a uniform glossy finish for oil and acrylic paintings. It is processed with acrylic resin and protects from atmospheric impurities. This spray varnish should be applied to finished works that have dried for at least 6 months for oil paintings, and 5 days for acrylics. Test spray nozzle before applying to work. Spray in slow, even strokes left to right. Let dry before turning work 90 degrees before re-applying. Can be removed with paint thinner or other mild solvent. Not for use in oil painting medium preparation.