Matruty, Imelda, Dzakiyya Nur Dhiya, Garnadi Jafar, and Fenti Fatmawati. “Photoprotective Lip Formulation Optimization Methods: A Systematic Review”. Science Midwifery 14, no. 2 (June 3, 2026): 326–337. Accessed June 3, 2026. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/2363.