Leswana N, Sinaga C. Identification Retinoic Acid Content in Online Whitening Cream Sold in Samarinda City Using Thin Layer Chromatography (TLC) and Spectrophotometry UV-Visible Methods. journal-jps.com [Internet]. 30Jul.2022 [cited 16Apr.2024];5(2):174-80. Available from: https://journal-jps.com/index.php/jps/article/view/112