Paint correction is a precision process that removes a controlled, thin layer of clear coat in order to eliminate the swirl marks, micro-scratches, oxidation, and haze that live in that top layer. Removing that layer restores a flat, reflective surface and recovers the paint's original depth and gloss.
It is not polishing in the consumer sense. It uses machine-driven cutting compounds and correction pads at specific speeds and pressures to achieve a documented improvement in surface clarity. The result is a finish that looks deeper and more saturated than the original — not because anything was added, but because the layer of defects was removed.
Done correctly, with measurement first and appropriate abrasive selection, paint correction produces a result that nothing else in the detailing market can match. Done without measurement, with too aggressive a compound, or for too many passes, it removes more clear coat than is safe and creates damage that cannot be undone without a respray.