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2,6-BIS(2-HYDROXYETHOXY)-3,5-PYRIDINEDIAMINE HCL

Description

2,6-Bis(2-hydroxyethoxy)-3,5-pyridinediamine HCl is a synthetic hair dye ingredient primarily used in permanent and semi-permanent hair coloring formulations. This compound belongs to the class of oxidative hair dyes, which react with hydrogen peroxide to create color molecules within the hair shaft. Its chemical structure features a pyridine ring with two hydroxyethoxy groups and two amino groups, providing multiple sites for color development and bonding.

This ingredient is particularly effective in producing warm brown to reddish tones in hair coloring products. It offers good color stability and resistance to fading, contributing to longer-lasting hair color results. The hydroxyethoxy groups enhance the molecule's solubility and penetration into the hair shaft, improving color uptake and distribution.

As with other oxidative hair dyes, 2,6-Bis(2-hydroxyethoxy)-3,5-pyridinediamine HCl should be used with caution, as it may cause skin sensitization in some individuals. Proper patch testing is recommended before use. This compound is typically used in conjunction with other dye precursors and coupling agents to achieve a wide range of hair color shades and tones in professional and at-home hair coloring products.