Suri, F. A., Auli, W. N., & Nareswari, T. L. (2024). Simultaneous Analysis for Determining Ascorbic Acid and Niacinamide Levels in Facial Serum Using UV-Visible Spectrophotometer with Chemometric Approach. Jurnal Ilmiah Medicamento, 10(2), 131–137. https://doi.org/10.36733/medicamento.v10i2.9023