Components in the Natural Indigo & Shibori Dye Kit

Q: What is the component/powder used as a reducing agent in your Natural Indigo & Shibori Dye Kit? How is it different from base? What is the base that can be used?

A: The reducing agent for the vat in the kit is actually the combination of the Ferrous Sulfate and the Slaked Lime. Together they form a molecule which modifies the indigo molecule and causes it to become able to integrate and adhere to fabric. Both ingredients - plus the indigo - are necessary for the reaction to happen.

The base (or basic molecule) in the kit is the calcium hydroxide AKA Slaked Lime. In water, this molecule dissolves and separates into calcium and hydroxide ions, effectively raising the pH (alkalinity) of the liquid. Slaked lime is the appropriate base to pair with ferrous sulfate to create a vat. Do not replace with another base as the reaction will not produce the desired result of properly reducing the indigo molecule.