An exterior vehicle can be protected with paint protection film (PPF) against stones chips, minor abrasions, bugs splatters, bird droppings, swirl marks and road debris. Commonly, it is used on the hood, bumper, and side mirrors of vehicles. In time, minor scratches and swirl marks will disappear due to its self-healing property.
For those who want to keep their vehicle looking new and avoid costly repairs, PPF is an excellent investment. A vehicle's appearance is not affected by it, as it is virtually invisible.  
In general, Black Diamond recommends PPF as one of the best ways to protect your vehicle's paint for years to come.