Hindritiani, Reti, Felly Nazlia, Nadia Octavia, Trustia Rizqandaru, Diah Puspitosari, and Kartika Ruchiatan. “A Split-Face Comparative Study in Efficacy and Safety Between the Combination of 4% Niacinamide and 4% Kojic Acid Cream Versus 4% Hydroquinone Cream for Epidermal Melasma”. Berkala Ilmu Kesehatan Kulit dan Kelamin 35, no. 2 (July 31, 2023): 93–99. Accessed October 2, 2024. https://e-journal.unair.ac.id/BIKK/article/view/40225.