LaserBond 100 Aerosol Spray is an All Purpose laser bonding material for producing permanent black marks on most surfaces and materials and is ready to use. It is ethanol based which allows for a faster drying time. It can be used on a variety of substrates including glass, ceramic, stone and metals such as stainless steel, brass, aluminum, copper, titanium, tin, nickel and many others. Shake the can well for about one minute before using. For best results, use between 50º and 90º F.