Decoding Hyperpigmentation: From Biological Mechanisms to Actives with Clinically Proven Topical Efficacy - A Narrative Review

This narrative review addresses the complex issue of hyperpigmentation, emphasizing the need for effective treatments due to its significant impact on quality of life. It highlights the intricate regulation of skin pigmentation, involving both melanocytes and their surrounding environment. The review provides a comprehensive analysis of topical solutions with clinically proven efficacy, discussing mechanisms such as melanogenesis, photoprotection, and the use of antioxidants. It also examines tyrosinase inhibitors and new compounds targeting downstream pathways, alongside interventions for epidermal homeostasis and the dermal microenvironment. The review concludes that combined approaches, utilizing multiple ingredients, offer the most effective treatment for hyperpigmentation, suggesting future research should focus on well-tolerated, multifaceted therapies.