Armor all clear glass and microfibre towel. Clean it first with the ceaner and paper towels. Then soak it with cleaner and towel it dry. Don't use one that has been softened in the washer or dryer. It will streak an be big smears in a little while.
Best was is to wash it with a leaves no streaks car wash and get it clean and wipe it dry with clean micro fiber.
I was mine with Mequires Ultimate spray synthetic and polish with microfiber. Comes cleaner easier and water runs ff better. Just be sure the whole window is towled good and wipers cleaned.