Blond was a very popular hair color in ancient Rome, and richer Romans would even sprinkle gold dust in their hair. Dyes for other colors could be made from henna, berries, and crushed nutshells. The black hair dye made from leeches and vinegar took around two months to prepare, because women would allow it to ferment before applying it.
10 Little-Known Facts About Human Hair
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Key Facts In This Video
Inspecting a person's hair can reveal their race and blood type, but not their gender. 00:20
Roman women lightened their hair with pigeon excrement. 00:37
Hair has been used to help clean oil spills. 01:35