Indigo

Indigo (CI 73000) : properties, uses, pros, cons, safety, alternatives Indigo (CI 73000), 2-(1,3-Dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one is known as Indigo Blue, an artificial dye used mainly in the textile industry and in the coloring of cosmetic products. Indigo is a synthetic organic dye belonging to the indigoid family...