Why does paint sometimes look hazy after polishing?

Haze can be caused by an aggressive compound, an unsuitable pad, soft paint, insufficient finishing or residue left on the surface. A finer polish and an appropriate finishing pad can often restore clarity if the haze is polishing-induced rather than a deeper scratch or paint problem. Remove polish residue with a panel wipe before judging, because residue alone can look like haze.

References
  1. Polishing (Glossary of Detailing Terms), International Detailing Association (IDA)
  2. Polishing, Wikipedia
  3. Abrasive, Wikipedia
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