Fernández-Varela-Gómez, Fernando, Alicia Sandoval-García, and Karla Valeria Cabrera-Rios. “Signs of Skin Aging: A Review”. International Journal of Research in Medical Sciences 12, no. 7 (June 29, 2024): 2674–2679. Accessed October 14, 2025. https://www.msjonline.org/index.php/ijrms/article/view/13712.