Which type of makeup did the Egyptians believe had protective properties against the sun's glare?

The belief that kohl had protective properties against the sun's glare is rooted in the historical practices of ancient Egyptians, who used this cosmetic not only for aesthetic purposes but also for practical benefits. Kohl, typically made from galena (lead sulfide) or other natural minerals, was primarily applied around the eyes. This served a dual purpose: it enhanced the eyes' appearance and provided a barrier that helped reduce the harmful effects of the sun's glare.

In the arid climate of Egypt, where sun exposure was intense, the thick, dark lines of kohl were thought to shield the eyes from harsh sunlight and possibly prevent eye infections, which were common due to environmental conditions. Additionally, the application of kohl was symbolic, believed to have protective qualities from evil spirits as well, showcasing the multifaceted role of cosmetics in ancient Egyptian culture.

Foundation, eye shadow, and lipstick, while important in various makeup applications, do not carry the same historical significance in relation to sun protection as kohl does. Thus, kohl stands out as the correct answer due to its association with both beauty and functional protection in ancient Egyptian society.