JANAH, H.; YULIANASARI, D. S.; AZIZAH; FAUZIYAH, N.; ANNISA, R.; AHDYANI, R. OPTIMIZATION OF NANO GEL FORMULATION BASED ON BANGKAL (NAUCLEA SUBDITA) WOOD BARK EXTRACT AND ANTIBACTERIAL ACTIVITY AGAINST PROPIONIBACTERIUM ACNES. Int J App Pharm 2025, 17, 206-213.