WAIKOLOA — Wai’ala Ahn and Justin Cool Tripp are happiest when they’re feeling blue. The two harvest and source plants from local farmers and make completely biodegradable dyes from fermented plants.

Stony Creek Colors is convincing farmers who used to grow tobacco to switch to indigo plants and selling the natural blue dye to fabric producers, including denim giant Cone Mills. The Goodlettsville, ...

A giant steel pot filled with indigo dye is the center of activity at Jane Palmer’s industrial work space, Noon Design Studio and Natural Dye House. “Today it is indigo, but on any given day, we dye ...

AMMAN — As most dye used for our daily life products have become synthetic, natural dye from Indigofera tinctoria (also known as “true indigo”) are still available, thanks to the dedicated efforts of ...

Scientists have found that natural indigo dye, extracted from leaves of a plant of the bean family, is capable of protecting human eye from harmful laser radiation. It can be used to develop optical ...