I am not sure about the process used to put it on or the science behind it, but the finish on my car is guaranteed for 5 years. That includes damage from bird droppings, sap, hard water etching, road tar, and bugs. So even if the stuff doesnt work, which so far it has prevented hard water etching from damaging the paint, they will detail my car for free and if they can't fix the problem they will repaint my car. The company that applied it is Touch of Class. Thanks for the info.