Paint correction is a process used in exterior detailing to restore a car's paint job by permanently removing surface defects or imperfections caused by wear and tear. This can include swirl marks, hazing, marring, sun fading, and oxidation. The two primary methods used for paint correction are compounding and wet sanding, both of which require skill and attention to detail to perform correctly. After paint correction is complete, it's important to seal the paint to protect it from environmental contaminants and preserve the finish for long periods with minimal upkeep required.