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Indigo & Adire Traditions: 10 Skills in 90 Seconds · Episode 2 of 10
Episode 2 / 10

Indigo Science: How the Dye Bath Works

Why does cloth pulled from an indigo vat appear yellow-green rather than blue?
Because indigo must be chemically reduced to leuco-indigo — a soluble yellow-green form — before it can bond with fibre. The blue colour only appears after the cloth is removed and leuco-indigo oxidises back to insoluble indigo pigment on contact with air.
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