Vera, Vera, and I Gusti Ayu Agung Praharsini. “Efficacy of Microneedling With PDRN Salmon 3% to Reduce Facial Hyperpigmentation: Skin Hyperpigmentation Index (SHI) Analysis”. Aesthetic Medicine 11, no. 3 (September 30, 2025): 16222. Accessed October 14, 2025. https://mail.mattioli1885journals.com/index.php/aestheticmedicine/article/view/16222.