A 4,000-year-old lipstick uncovered in Iran may be the oldest ever found. It's uncannily similar to modern ones.

• An intricate ancient stone tube could be the oldest known example of an ancestor to lipstick. 
• The tube was found in Iran, once home to a mysterious Bronze Age culture. 
• The pigment inside the tube bears remarkable similarities with modern-day lipstick.

A small stone tube found among the remains of a mysterious Bronze Age culture could be the oldest known example of lipstick.