Ginting, O. and Rahmah, P. (2022) “Evaluation of Anti-acne Gel Preparations Combination of Aloe Vera Leaf Extract (Aloe vera (L) Brum F.) And Betel Leaf Extract (Piper betle L.)”, Journal of Pharmaceutical And Sciences, 5(1), pp. 12-20. doi: 10.36490/journal-jps.com.v5i1.73.