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2-CHLORO-5-NITRO-N-HYDROXYETHYL-P-PHENYLENEDIAMINE

Description

2-Chloro-5-nitro-N-hydroxyethyl-p-phenylenediamine is a synthetic hair dye ingredient primarily used in semi-permanent and permanent hair coloring products. This compound belongs to the para-phenylenediamine (PPD) family of dyes, known for their excellent color-fastness and ability to penetrate the hair shaft.

The molecule's structure allows it to react with hydrogen peroxide, creating larger color molecules that become trapped within the hair cortex. This process results in long-lasting color that resists fading through multiple washes. The chloro and nitro substituents on the aromatic ring contribute to the specific shade and intensity of the resulting hair color.

This ingredient is particularly effective in producing warm brown to reddish-brown tones in hair. It is often used in combination with other dye precursors to achieve a wide range of color outcomes. While effective, it's important to note that some individuals may experience allergic reactions to PPD-based dyes. Patch testing is recommended before use to minimize the risk of adverse reactions. Professional application and adherence to manufacturer guidelines are crucial for optimal results and safety when using products containing this ingredient.