Dips are used to describe fabric or yarn when in the dye. Indigo yarns dipped in an indigo bath usually 6 times but up to 16 times.
Indigo dying industrial. Synthetic indigo is a substance created from benzene derivatives from petroleum, a fossil fuel that most of us realise is not in limitless supply. The benzene has to be treated chemicals, including hydrogen cyanide, to make it into indigo dye.
Rope dyed is the term used to describe a way of dye indigo and considered the best possible method to dye indigo yarn.
Slasher Dyed is one of the three methods to dye indigo yarn.
Textile Dye diagram with links to all related terms in the Eco-Fashion Encyclopedia