Stove Bright Gas Appliance Glass Cleaner is specially formulated by FORREST Technical Coating chemists to clean the glass on gas fireplace inserts and gas fired free-standing stoves. The creamy blue paste is typically applied with a moist cloth to both the inside and outside of a glass door on a gas fireplace insert or gas fired free-standing stove. After a few minutes the paste dries and you use a clean cloth to buff the window clean. The specially formula leaves a very thin film of residue that smooths the surface of the glass. This film makes each subsequent cleaning easier.