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4,6-BIS(2-HYDROXYETHOXY)-M-PHENYLENEDIAMINE HCL

Description

4,6-Bis(2-hydroxyethoxy)-m-phenylenediamine HCl is a potent hair dye ingredient widely used in permanent and semi-permanent hair coloring formulations. This synthetic compound belongs to the aromatic diamine family and functions as an oxidative hair dye precursor. When combined with an oxidizing agent, it produces vibrant, long-lasting color results.

The molecule features two hydroxyethoxy groups attached to a phenylenediamine core, enhancing its solubility and stability in hair dye formulations. The HCl salt form improves its shelf life and ease of handling during manufacturing processes. This ingredient is particularly effective in creating warm brown to reddish-brown shades, depending on the other dye precursors present in the formulation.

4,6-Bis(2-hydroxyethoxy)-m-phenylenediamine HCl penetrates the hair shaft during the coloring process, reacting with hydrogen peroxide to form larger, colored molecules that remain trapped within the hair's cortex. This mechanism ensures color longevity and resistance to washing. While effective, it's essential to note that this compound may cause skin sensitization in some individuals, necessitating proper patch testing before use in hair dye products.