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HYDROXYETHYL-P-PHENYLENEDIAMINE SULFATE

Description

Hydroxyethyl-p-phenylenediamine sulfate is a synthetic hair dye ingredient primarily used in permanent and semi-permanent hair coloring products. This compound belongs to the para-phenylenediamine (PPD) family of hair dyes, known for their ability to produce long-lasting color results. Unlike traditional PPD, hydroxyethyl-p-phenylenediamine sulfate has been modified to potentially reduce the risk of allergic reactions in sensitive individuals.

The ingredient functions as an oxidative hair dye precursor, reacting with hydrogen peroxide to create larger, colored molecules within the hair shaft. This process allows for effective gray coverage and vibrant color results. Hydroxyethyl-p-phenylenediamine sulfate is particularly effective in producing brown and black shades, making it a popular choice for darker hair color formulations.

While generally considered safe when used as directed, patch testing is recommended before application to identify potential allergic reactions. The ingredient is regulated by cosmetic authorities worldwide, with specific concentration limits set for its use in hair dye formulations. Proper ventilation during application and adherence to manufacturer instructions are essential for safe usage.