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4-AMINO-2-HYDROXYTOLUENE

Description

4-Amino-2-hydroxytoluene, also known as 4-amino-2-methylphenol, is a potent hair dye ingredient widely used in the cosmetic industry. This synthetic compound belongs to the family of aromatic amines and plays a crucial role in permanent hair coloring formulations. Its chemical structure allows it to penetrate the hair shaft and react with other dye precursors to create long-lasting color.

The ingredient is particularly effective in producing warm brown to reddish-brown shades, making it a popular choice for auburn and brunette hair dyes. When oxidized, 4-amino-2-hydroxytoluene forms larger, colored molecules that remain trapped within the hair cortex, ensuring color longevity. Its molecular size and properties contribute to excellent color retention and resistance to washing.

However, 4-amino-2-hydroxytoluene may cause skin sensitization in some individuals, necessitating patch tests before use. Proper formulation and adherence to regulatory limits are essential to minimize potential adverse reactions. Professional colorists and manufacturers must handle this ingredient with care, ensuring appropriate concentrations and combinations with other dye components to achieve optimal results while maintaining safety standards.