Indigo dyes are widely used in the dyeing of natural fibers and synthetic fiber such as cotton, linen, silk and wool, especially in textiles with high requirements for colour fastness.

Indigo dye has excellent light resistance, water resistance, pollution resistance, washing resistance and friction resistance. It is also widely used in cosmetics, inks, plastics and other fields. In ink, indigo dye has good solubility and dispersion, which can improve the ink's durability. Printing properties; in plastics, indigo dyes are often used to improve the hue and transparency of plastics.