PPG's Aquapel Glass Treatment forms a chemical bond with the glass which increases water repellency, causing it to bead and easily shed off the glass. These fluorinated compounds apply in just minutes to a clean, dry windshield or any exterior glass surface, and last up to six times longer than silicon-based products. Aquapel Glass Treatment remains highly effective after months of normal use, including driving in rain and snow, car washing, and glass cleaning. When your safety is involved, SEE CLEARLY and DRIVE SAFER! Directions on How to Apply Aquapel: Step 1: Clean - Thoroughly clean and dry the glass. Step 2: Apply - Hold the applicator between the thumb and fingers with the pad down and level over the windshield. Squeeze the wings together until a popping sound is heard and liquid is released onto the pad. Use immediately. Wipe the soft pad of the applicator over the glass up and down then side to side to ensure the glass is well covered. Avoid painted surfaces. Remove liquid from non-glass surfaces with dry paper towel. Step 3: Dry - Wipe the glass with a clean dry paper towel immediately after Aquapel has been applied to the entire windshield. Dispose of applicator and paper towel. Failure to wipe immediately may cause hazing that requires additional buffing with a clean dry paper towel. Note: One single-use applicator will treat one windshield or two side windows. Once applied, Aquapel Glass Treatment can be reapplied as needed. Cleaning glass with ordinary glass cleaners will not affect product durability.