Determination of the Sun Protection Factor of Red Ochre, various Namibian Seed Oils, and the Subsequent Development of a Lip Balm. Journal of the Namibia Scientific Society, [S. l.], v. 72, p. 8, 2026. DOI: 10.66365/jnss.2025.08. Disponível em: https://journal.namscience.com/index.php/journal/article/view/32.. Acesso em: 12 may. 2026.