Nurfadilah, H., Nofriyaldi, A., & Susanti, S. (2026). Formulation and SPF Evaluation of Gel Preparations Containing Ethanol Extract of Guava Leaves (Psidium guajava L.). Jurnal Sains Dan Teknologi Farmasi Indonesia, 15(1), 46–55. Retrieved from https://e-journal.stfi.ac.id/index.php/jstfi/article/view/132