Used primarily as a skin-lightening agent in cosmetic and dermatological products to treat hyperpigmentation, melasma, and age spots. It works by inhibiting tyrosinase, an enzyme involved in melanin production, thereby reducing the formation of dark patches on the skin. Often found in creams, serums, and lotions, it is available in over-the-counter and prescription strengths depending on concentration. Also serves as a reducing agent in photographic developing processes, helping to develop exposed film by converting silver halides to metallic silver. In industrial applications, it acts as a polymerization inhibitor, preventing premature curing of monomers such as acrylates and methacrylates during storage and transport. Additionally, used as an antioxidant in rubber, oils, and fats to prevent oxidative degradation. Its ability to scavenge free radicals makes it useful in stabilizing various chemical formulations.