Andieni , H. P. and Kusumowati, I. T. D. (2026) “Determination of Retinoic Acid Content in Anti-Acne Creams in Blora Regency Using UV Spectrophotometry”, Journal of Pharmaceutical and Sciences, 9(1), pp. 327–335. doi: 10.36490/journal-jps.com.v9i1.1243.