Back to Ingredient Dictionary

1-HYDROXYETHYL 4,5-DIAMINO PYRAZOLE SULFATE

Description

1-Hydroxyethyl 4,5-diamino pyrazole sulfate is a synthetic hair dye precursor used in permanent hair coloring formulations. This compound belongs to the pyrazole family and acts as an oxidative dye intermediate. When combined with an oxidizing agent, typically hydrogen peroxide, it undergoes a chemical reaction to form larger, colored molecules within the hair shaft.

This ingredient is particularly effective in producing cool-toned shades, ranging from ashy browns to slate grays and deep blacks. Its molecular structure allows for excellent penetration into the hair cortex, resulting in long-lasting color. The sulfate form enhances its solubility in aqueous solutions, facilitating its incorporation into various hair dye formulations.

1-Hydroxyethyl 4,5-diamino pyrazole sulfate is often used in conjunction with other dye precursors to achieve a wide spectrum of hair colors. It exhibits good stability in formulations and demonstrates minimal skin sensitization potential when used as directed. However, as with all hair dye ingredients, patch testing is recommended before use to check for individual sensitivities. This compound complies with regulations set by cosmetic regulatory bodies in many countries, ensuring its safety for use in commercial hair coloring products.