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4,4'-DIAMINODIPHENYLAMINE SULFATE

Description

4,4'-Diaminodiphenylamine sulfate is a potent hair dye ingredient primarily used in oxidative hair coloring formulations. This synthetic compound belongs to the aromatic amine family and acts as a coupler in the dyeing process. When combined with an oxidizing agent and primary intermediates, it produces a range of brown to black shades, offering excellent color depth and coverage.

The molecule's structure allows for efficient penetration into the hair shaft, where it reacts with other colorants to form larger, stable color molecules. This process ensures long-lasting results and resistance to washing and environmental factors. 4,4'-Diaminodiphenylamine sulfate is particularly effective in covering gray hair due to its strong affinity for keratin proteins.

While effective, this ingredient requires careful formulation and application due to its potential for skin sensitization. Proper patch testing is essential before use. In commercial hair dye products, it is typically used in concentrations ranging from 0.1% to 3%, depending on the desired color intensity and formulation specifics. When used correctly, 4,4'-Diaminodiphenylamine sulfate contributes to vibrant, durable hair color results that meet consumer expectations for professional-quality home hair dyeing products.