Protective coating that adheres to your vehicle's glass - up to 12 months of protection. This coating creates a hydrophobic surface that requires less cleaning, causing rain to bead off easily. Watermarks will be a thing of the past, and due to its properties, your windows will need less cleaning. One application lasts up to a year, and if windshield wipers are used, they will reduce friction, making the wipers last longer before needing replacement.