Cars are one of the most depreciating commodities in the market. As soon as they are driven off the showroom, their prices fall by 10%. That is the reason it becomes very difficult to get a good price for old cars. Within five years, the prices of even the most expensive car brands can fall to as much as 50% of what they were initially purchased for. Hence, one thing must be kept in mind. Cars are not homes. While you can buy and sell homes and make profits off them even, you cannot do so with a car. No one wishes to buy a car that has been used before, if they do so it's only because of the reduced cost that they will have to pay for it.
There are various ways in which people try to perk up the appearance of their old cars so that they can fetch a better price in the resale market. This can include changing the upholstery of the car and using leather seats to give it a plusher look, changing the tires and putting in new ones that look and are functional, cleaning the interiors of the cars from all kinds of rubbish and refuse that might have collected in it, attaching some topographically friendly devices to the car, adding a great stereo system to the car and so on. But there is one point that can really help boost the resale value of the car. And that is, adding a paint protection on the surface of the car.
Paint protection is something that is mostly sold as an add-on when you purchase new cars nowadays. These are films that are applied over the paint surface of the car which improves the durability of the paint and also keeps the car looking newer and shinier for a longer time. However, paint protection can also be applied at any time later on. There are also DIY kits that allow these protections to be added at your own convenience and at a lowered cost.
In earlier days, people used to try and improve the paints shine of their cars through various crude methods, like waxing for example. Waxing is done a lot nowadays too, but this does not necessarily improve the resale value of the car in any way and in a continuous job. When a car is waxed, the wax layer becomes stickier on exposure to the sun and that acts as an attractor for dust and grime. When the same car is waxed again, this grime and dirt becomes compacted with the earlier waxy layer and becomes a permanent feature of the car. Hence, when the car is repeatedly waxed, it begins looking older and older and it actually brings down the resale value of the car.
On the other hand, protecting the car's paint through modern methods such as applying sealants brings the new showroom look back to the car. The best benefit here is that the paint protection stays on the car for almost the entire life of the car and the car keeps on looking shiny and sleek. Also, unlike other methods to improve the car's resale value, the paint protection can be applied on the car even when the car is being used (eg at the owners workplace or home). Once applied on a car, most professionally applied paint protection will last for years without diminishing in any way.