“Combination of 5% Cysteamine Serum and 3% Tranexamic Acid Cream Using Layering Technique for Treatment of Melasma: A Pilot Study”. Journal of Pakistan Association of Dermatologists 34, no. 1 (May 6, 2024): 178–184. Accessed July 27, 2026. https://www.jpad.com.pk/index.php/jpad/article/view/2481.