The beneficial effects of the major classes of light stabilizers are reviewed from a theoretical perspective as well as through practical application examples. The use of UV absorbers, hindered amine light stabilizers, other stabilizer types, and combination systems to reduce aesthetic as well as physical property deterioration due to UV exposure is discussed. Continued research on both the theoretical and practical aspects of polymer light stabilization will provide the basis for the successful development of new UV‐stabilized plastics and coatings formulations.

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