Istiana, Nadira Yuli, Nurul Fitriani, and Fajar Prasetya. “Optimasi Basis Masker Gel Peel-Off Dan Uji Stabilitas Fisik Sediaan Masker Gel Peel-Off Dari Ekstrak Daun Sirih Hitam (Piper Betle L. VAR. NIGRA): Optimization of Peel-Off Gel Mask Base and Physical Stability Test of Peel-Off Gel Mask from Black Betel Leaf Extract (Piper Betle L. VAR. NIGRA)”. Proceeding of Mulawarman Pharmaceuticals Conferences 13, no. 1 (April 10, 2021): 131–138. Accessed April 27, 2026. https://mpc.jurnalfamul.com/index.php/mpc/article/view/456.