One ounce of all-natural, sustainably grown indigo extract. Yields a range of beautiful blues, from light sky blues to dark midnight blues. Ecologically produced. Spent leaves are composted and extraction water returned to the next crop. NOTE: Indigo requires an active reduction vat in order to be used as a dye. For dyeing yarn and fabric only: not for use as a hair or skin dye. One ounce of indigo extract (indigofera tinctoria). When dissolved in an indigo vat, produces a stunning range of blues, from pale sky-blues to dark midnight blues. Colorfast and lightfast on all natural fabrics, including wool, silk, and cotton.