Research Topic: depigmentation

Development of dihydrooxyresveratrol-loaded nanostructured lipid carriers for safe and effective treatment of hyperpigmentation

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This research developed a new skin-brightening treatment using nanoparticles to deliver oxyresveratrol and its modified form (DHO) more effectively to the skin. The scientists improved the stability of these compounds by creating tiny lipid-based carriers that protect them from light damage and help them penetrate the skin barrier. Testing showed these formulations safely reduced melanin production without harming healthy skin cells, offering promise for cosmetic products to treat dark spots and hyperpigmentation.

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Mechanistic Insights into Tyrosinase-Catalyzed Metabolism of Hydroquinone: Implications for the Etiology of Exogenous Ochronosis and Cytotoxicity to Melanocytes

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Hydroquinone is a common ingredient in skin-lightening products that works through enzyme-mediated chemical reactions. This research revealed how an enzyme called tyrosinase processes hydroquinone through different chemical pathways, ultimately producing melanin-like compounds. The study found that long-term hydroquinone use may cause a darkening side effect called exogenous ochronosis through continued enzyme activity, and identified a new chemical marker to track this process.

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Kojic Acid Showed Consistent Inhibitory Activity on Tyrosinase from Mushroom and in Cultured B16F10 Cells Compared with Arbutins

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This study compared four skin-whitening compounds to find the best one for use as a testing standard in laboratories. Kojic acid was found to be the most reliable choice because it effectively blocks the enzyme tyrosinase, which produces skin pigment, without damaging cells. The researchers tested these compounds both in test tubes and in actual melanoma cells to understand how they work differently.

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