Aung, Hnin M., Nattawadee Kanpipit, and Suthasinee Thapphasaraphong. “Effects of Thanaka (<i>Hesperethusa crenulata< i>) Stem Bark Extract on Collagen Activation and Anti-Melanogenesis for Cosmetic Applications: Http: www.doi.org 10.26538 Tjnpr V8i1.21”. Tropical Journal of Natural Product Research (TJNPR) 8, no. 1 (February 1, 2024): 5852–5860. Accessed May 19, 2024. https://tjnpr.org/index.php/home/article/view/3396.