Clothing, branches and poor washing technique can leave marks that reduce the clarity of automotive paint.

Polishing can improve many of these defects, but it is important to understand what the process actually does.

A scratch changes how light reflects from the surface. Its edges and depth scatter light, making the mark visible even when the surrounding panel remains glossy.

Abrasive polishing removes a very small, controlled amount from the surrounding upper layer and refines the scratch edges until the surface reflects more evenly.

It does not normally move removed paint into the scratch or rebuild missing clear coat. Glazes may temporarily fill fine marks, but that is a different, less permanent effect.

If a scratch extends through the clear coat or colour layer, safe polishing cannot remove it completely. Paint measurement, visual inspection and a test area help determine the useful correction before unnecessary material is removed.