Here's how natural indigo is still grown and fermented in Japan, despite the fashion industry's dependence on synthetic dyes.

People have been wearing blue jeans for centuries. Originally, the blue color came from a natural indigo dye. The dye was chosen for the way it interacted with cotton. When heated, most dyes ...

Production of indigo dye was a major industry in 19th century Bengal, India. Indigo factories were sited on river valleys for the water supply, and because indigo plants (several species of ...