Erin Parsons on Instagram: "A recent archaeological discovery at Kani Koter, Iran, has revealed the earliest known use of graphite in ancient eye makeup (kohl). Dating back 2,700 years, the kohl found in an Iron Age tomb contained a unique blend of manganese oxides and natural graphite, materials not previously associated with kohl recipes. This find, from an area on the eastern edge of the Assyrian Empire, suggests a sophisticated understanding of mineral properties and cosmetic chemistry among