Nabila , S.; Rani , Z.; Lubis , M. S.; Yuniarti , R. Formulation of a Nanogel Mask Preparation from Ethanol Extract of Jambu Nasi-Nasi Fruit (Syzygium Zeylanicum (L) DC) As a Skin Moisturizer. JPS 2026, 9, 1528-1547.