Our 3 in 1 automotive antifoggants contain polydimethylsiloxane, antifreeze. It can remove the oil film, do not damage the glass, keep translucent clean. Its use method is simple: 1. Clean the dust and dirt on the surface of the glass. 2. Spray the product evenly on the car glass. 3. Wipe evenly on the glass surface. 4. Rinse and scrub with clean water. And can make the car not easy to fog in rainy days, safe driving.