The process that makes indigo, vat, and/or sulfur dyestuffs soluble. In the case with indigo or vat dyestuffs, the dye is reduced with hydro and caustic to make it water soluble. This is referred to as the leuco form.
The process that makes indigo, vat, and/or sulfur dyestuffs soluble. In the case with indigo or vat dyestuffs, the dye is reduced with hydro and caustic to make it water soluble. This is referred to as the leuco form.