Used as a key ingredient in hair dye formulations, it helps in achieving long-lasting and vibrant color by facilitating the penetration of dye molecules into the hair shaft. Its sulfate group enhances solubility, ensuring even distribution during application. Additionally, it is utilized in oxidative hair coloring processes, where it acts as a coupler, stabilizing the color and improving resistance to fading from washing or environmental exposure. Its compatibility with other dye components makes it a versatile choice in cosmetic chemistry.