Wisudyaningsih, Budipratiwi, Kuni Zu’aimah Barikah, and Ilfi Nur Kamelia. “Effect of Quercetin and Zinc Oxide Concentrations on PH and In Vitro Activity of Sunscreen Lipstick”. Borneo Journal of Pharmacy 8, no. 2 (May 30, 2025): 167–175. Accessed August 26, 2025. https://journal.umpr.ac.id/index.php/bjop/article/view/6797.