Dye Dangerously with Indigo Dye

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

Ethel Mairet's natural dyeing II: Extract of Indigo

The Social and Ecological Impact of Naturally Dyed Clothing

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

Indigo Dye - The One And Only Blue Gold

Indigo Dyeing, full video

Indigo dyeing in a jar – Flextiles

What are biosynthetic dyes & could they replace the toxic petroleum-heavy ingredients in today's predominant indigo garment dye? — Conscious Chatter

Blue Gold: The Art and Science of Indigo

Dying hair black with henna and indigo – Copyleft Currents