Mix for browning 3 hours Charbonel Lefranc and Boirgeois 1L Oil-based fixative designed for gilding gold and sheet metal, a staple of master gilders around the world. Golden varnish is lead-free and is perfect for setting gold leaf on non-porous surfaces, such as glass, metal and marble. 3 Hour Browning Mix is designed for use on small surfaces or when conditions are not suitable for 12 Hour Browning Mix. This includes surfaces subject to moisture and a high rate of dust. It is suitable for indoor and outdoor work. Estimated drying time: 3 hours Made in France. Contains 1L. Brand: Lefranc and Boirgeois.