A paint protection film, or "PPF," protects the paint job from the weather. Especially things like scrapes, chips from stones, and everyday usage and wear. The top coat on Avery Dennison PPFs cures itself from scratches and is exceptionally resistant to stains. So that it not only protects the car, but also makes it look great.
Keeping the paint on the car helps keep its value. The PPF keeps stone chips from getting through. Keeping paintwork safe is crucial and a big part of how long a car will last.