Description from Botanical Colors
Organic Indigo (Indigofera tinctoria) Our indigo extract is Global Organic Textile Standard (GOTS) certified, finely powdered and yields a very rich and dark blue. Our indigo is 45-48% indigotin which is 2 to 3 times stronger than other indigo on the market so you produce deep colors with fewer dips. The indigo is very pure and potent and is grown and harvested by small producers. Each purchase of this indigo helps support small scale agriculture and women’s groups. Instructions included.