Febriani, Yessi, salman salman, Salmah Lubis, and Fara Annisa. 2022. “FORMULATION OF RED BETEL LEAF EXTRACT SERUM (Piper Crocatum Ruiz & Pav.) AS ANTIOXIDANT”. Journal of Pharmaceutical And Sciences 5 (1), 120-27. https://doi.org/10.36490/journal-jps.com.v5i1.107.