Putri R, Yani. “Optimation Hydroxypropyl Methylcellulose (HPMC) and Carbopol in Peel-Off Gel Mask Antioxidant Jamblang Leaf Extract (Syzygium Cumini L.)”. Jurnal Kesehatan dr. Soebandi 8, no. 2 (October 31, 2020): 164–169. Accessed April 27, 2026. http://journal.uds.ac.id/index.php/jkds/article/view/228.