Dye Dangerously with Indigo Dye

There is no other dyestuff like indigo: complex chemistry, a tendency to rub off, and irresistible shades of blue.

How Do You Make a Less Toxic Blue Dye? Start With Red Beets - The New York Times

Indigo - Asian Textile Studies

Indigo Dyeing: Time and Patience Natural Dye: Experiments and Results

The Problem with the Fashion Industry's Indigo

Is Natural Indigo More Sustainable than Synthetic? - Kingpins Show

Indigo, an elusive dye that never ceases to amaze

Indigo Dyeing 101: How to Dye with Indigo [Vat Types & Process]

The Discovery of the Indigo Plant and Dye

Indigo - Asian Textile Studies