Ancient Egyptians used kohl eyeliner for cosmetic as well as medical reasons, believing that it protected the eyes from the Sun. It remains popular in Africa, Southeast Asia, and the Middle East today. Though homemade preparations are made from soot, commercial kohl products often contain galena—also known as lead sulfide—and have the potential to expose users to lead. Many Indian parents line their babies’ eyes with kohl or apply a dot of it behind their babies’ ears to protect them from what? Discuss