Kit includes high quality indigo powder, 2T calcium hydroxide base, and 2T thiourea dioxide reducer.
In addition to these ingredients, you will need a 1 quart glass jar, a large pot or bucket, sticks and/or tongs for stirring, and a cup of white vinegar.
Calcium hydroxide (lye) is a natural, but highly alkaline material, which causes burns if touched before being added to liquid. Add this element away from children.