Kurniawati , Cahyani Rizki, Rofidah Nur Umar, and Sapri Sapri. 2026. “Formulation and Physical Characterization of Nanopropolis (Trigona sp.) Hydrogel Acne Patch from Balikpapan”. Journal of Pharmaceutical and Sciences 9 (3):3073-81. https://doi.org/10.36490/journal-jps.com.v9i3.1759.