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N,N'-DIMETHYL-N-HYDROXYETHYL-3-NITRO-P-PHENYLENEDIAMINE

Description

N,N'-Dimethyl-N-hydroxyethyl-3-nitro-p-phenylenediamine is a synthetic hair dye ingredient primarily used in semi-permanent and temporary hair coloring products. This aromatic compound belongs to the family of para-phenylenediamine (PPD) derivatives, known for their efficacy in hair coloration. Its chemical structure allows for effective penetration of the hair shaft, resulting in longer-lasting color compared to direct dyes.

The ingredient imparts a range of warm, reddish-brown hues to hair, depending on the concentration and formulation. It is often combined with other dye precursors to achieve a broader spectrum of colors. N,N'-Dimethyl-N-hydroxyethyl-3-nitro-p-phenylenediamine is particularly suitable for gray hair coverage and enhancing natural hair tones.

While effective, this compound may cause allergic reactions in some individuals, necessitating patch testing before use. It is regulated by cosmetic authorities worldwide, with concentration limits set to ensure safety. Formulators must carefully balance its use with other ingredients to optimize color performance and minimize potential irritation. This dye precursor is not recommended for use in products intended for dyeing eyelashes or eyebrows due to the sensitive nature of these areas.