“Comparison of Effectiveness and Safety of Topical 30% Metformin Versus 4% Hydroquinone in the Treatment of Epidermal Melasma”. Journal of Pakistan Association of Dermatologists 34, no. 1 (May 6, 2024): 73–79. Accessed July 27, 2026. https://www.jpad.com.pk/index.php/jpad/article/view/2748.