Kulwa, G. S. ., & Mihale, M. J. . (2020). Levels and Exposure Risks of Lead, Arsenic and Mercury from Selected Lipstick and Nail Polish Cosmetics Marketed in Dar es Salaam, Tanzania. Tanzania Journal of Science, 46(3), 779–790. https://doi.org/10.4314/tjs.v46i3.18