Shine and freshness of the paint are the foundation of how any car looks. Paint correction, commonly called polishing, will not only raise the value of the vehicle but also give you the feeling of owning a well-kept car.
When you sell a car, its outward appearance matters most to the buyer. First the car is looked over from the outside, then inside, and only at the very end do the technical questions come. So if you are planning to sell, paint that has been polished and waxed to a shine will make it far easier to sell.
The number of correction stages depends on the result you want and the state of the paint. One stage removes the finest scratches and dull patches (for example from automatic car washes) - ideal for a car being sold. Two stages are recommended for dark paints (black, navy, graphite), where deeper scratches show. Three stages - for badly scratched paint or as preparation for a ceramic coating.
A ceramic coating deepens every paint colour and is hydrophobic - it repels water. Because of that, less dirt sticks to the paint, it stays clean for longer, and washing becomes easier and quicker. Ceramic coatings are for people who want their car to look superb for years, and for those who value their time.
