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M-PHENYLENEDIAMINE

Description

M-Phenylenediamine, also known as 1,3-diaminobenzene, is a versatile aromatic compound widely used in hair dye formulations. This colorless to light purple crystalline solid is prized for its ability to produce rich, dark shades when oxidized. As a key intermediate in hair coloring processes, m-phenylenediamine reacts with other dye precursors to create lasting, vibrant hues.

In hair dye applications, m-phenylenediamine penetrates the hair shaft, where it undergoes oxidation to form larger, colored molecules. This process results in permanent color changes that resist fading and washing. The compound's small molecular size allows for efficient penetration, ensuring even color distribution throughout the hair.

While effective, m-phenylenediamine requires careful handling due to its potential for skin sensitization. Manufacturers must adhere to strict concentration limits and include appropriate warning labels. When used as directed, products containing this ingredient can provide long-lasting, intense hair color results.

It's important to note that m-phenylenediamine is distinct from its isomer p-phenylenediamine, which has different reactivity and application profiles in hair coloring formulations.