Obat, Rose, and Claire Bosire. “Formulation and Evaluation of Herbal Lipstick Using Beta Vulgaris and Lawsonia Inermis As Natural Colorants”. Journal of Physical and Applied Sciences (JPAS) 1, no. 1 (August 30, 2022): 28–37. Accessed August 5, 2026. https://www.journals.editononline.com/index.php/jpas/article/view/233.