Combination of 5% Cysteamine Serum and 3% Tranexamic Acid Cream using Layering Technique for Treatment of Melasma: A Pilot Study. J Pak Assoc Dermatol [Internet]. 2024 May 6 [cited 2026 Jul. 27];34(1):178-84. Available from: https://www.jpad.com.pk/index.php/jpad/article/view/2481