Used primarily in the cosmetic and personal care industry as a key ingredient in hair dye formulations. It acts as a coupler in oxidative hair coloring systems, helping to produce a wide range of shades, particularly natural and warm tones. It contributes to color intensity, stability, and longevity by reacting with primary intermediates in the presence of an oxidizing agent. Due to its solubility in aqueous and alcoholic systems, it is easily incorporated into liquid and cream-based hair color products. Its structure allows for good penetration into the hair shaft, ensuring even color development and improved coverage of gray hair.