This spray helps to improve wet weather visibility by repelling rain, sleet and snow through creating an invisible hydrophobic layer over the treated glass surface. This layer also makes for effortless removal of contaminants such as bugs, mud and salt. Simply apply the repellent to the exterior part of your chosen glass pane, then using a cloth to wipe into the glass until dry. Then watch the water droplets roll off as you are driving along. Main Features: --Ideal for windscreens, side and rear windows, and even headlight covers --Safely improves wet weather visibility --Invisible application --Reduces cleaning time for contaminants --Versatile usage; can be applied to any exposed glass panes of your choice