Armor All Extreme Shield + Ceramic Glass Cleaner offers long-lasting clarity and visibility through your auto windows for comfortable driving. The extreme water beading formula in Extreme Shield and ceramic technology create an invisible protective barrier to help repel water while cleaning exterior glass to keep it clean longer. This window cleaner glass treatment lasts for weeks and is effective up to 0 degrees Fahrenheit to prevent snow, ice, sleet and road spray from sticking to glass to maintain a clear view. The water repellent spray also keeps windshield wipers free from icy build-up longer vs. untreated surfaces. The aerosol car care window spray is easy to apply with a multi-directional sprayer. Apply the window cleaning spray evenly to exterior glass in a light coat. Buff in the water repellent spray with a microfiber towel to set the ceramic hydrophobic technology.