Ritonga , Nur Sakina, Minda Sari Lubis, Rafita Yuniarti, and Zulmai Rani. “Manufacture and Activities of Anti-Acne Nano Essence of Pineapple Tubers Extract Sheet Mask (Ananas Comosus (L.)Merr)”. Journal of Pharmaceutical and Sciences 8, no. 2 (May 9, 2025): 782–798. Accessed July 27, 2025. https://journal-jps.com/new/index.php/jps/article/view/852.