AUTHOR=Yu Binrui , Wang Nailong , Cai Shanshan , Yan Hao , Sun Shaojia , Wang Siru , Li Ye , Liang Zhengting TITLE=Research progress on peptides that inhibit melanin synthesis JOURNAL=Frontiers in Pharmacology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1610623 DOI=10.3389/fphar.2025.1610623 ISSN=1663-9812 ABSTRACT=Melanin produced by melanocytes, primarily determines human skin color and protects against ultraviolet radiation. However, excessive melanin deposition can lead to skin conditions such as freckles, age spots, and moles, potentially causing aesthetic concerns and psychological distress. Consequently, there is significant research interest in developing safe and effective whitening products that inhibit melanin synthesis. Bioactive peptides represent a promising compound category that effectively reduces melanin synthesis with minimal side effects. This review explores melanin pigmentation, identifies sources of peptides that inhibit melanin synthesis, and elucidates the mechanisms by which these peptides operate, aiming to contribute to developing novel whitening products.