Our car glass brushes contain citric acid, sodium carbonate and disodium EDTA. It can fully protect the glass and prevent secondary pollution. Can clean oil film, shellac, water stains and other stubborn stains. Its use method is very simple: 1. Clean the impurities and dust on the surface of the car glass; 2. Open the lid and apply it directly and evenly on the car glass with a cleaning brush; 3. Finally, rinse with water. No need to clean, polished as new. Brush head scientific design, no damage to glass, long service life.