Studi Pustaka Peningkatan Nilai SPF (Sun Protection Factor) pada Tabir Surya dengan Penambahan Bahan Alam: Review: Additional Natural Materials to Enhance SPF (Sun Protection Factor) Value of Sunscreen Product. J. Sains. Kes. 2024;4(1):79–88. Accessed March 16, 2025. https://jsk.ff.unmul.ac.id/index.php/JSK/article/view/338