Used primarily as a light stabilizer in polymers, this compound protects materials from degradation caused by UV radiation. It is especially effective in plastics, coatings, and adhesives exposed to outdoor environments. By quenching free radicals formed during UV exposure, it helps prevent discoloration, cracking, and loss of mechanical strength. Commonly found in polyethylene, polypropylene, and polyurethane products, it enhances the lifespan of automotive parts, agricultural films, and exterior building materials. Also used in some personal care products to stabilize formulations against sunlight.