“Toxic Metals in Facial Cosmetics: Chemical Analysis Lead and Cadmium in Lipstick, Foundation Creams Sold at Aden Market, Yemen”. University of Aden Journal of Natural and Applied Sciences 29, no. 2 (June 29, 2026): 27–35. Accessed August 24, 2026. https://journals.aden-univ.net/index.php/uajnas/article/view/31.