4-Nitro-o-phenylenediamine dihydrochloride

Ingredient type: HUMECTANT/WATER-SOLUBLE

✨ Role: 4-nitro-o-phenylenediamine dihydrochloride is commonly used in cosmetic products as a hair dye. It helps dye hair, giving it a vibrant, long-lasting color.

Ingredient type: Water-soluble

‍⚕️ Safety: This ingredient is subject to strict regulations in the European Union and can be used in specific concentrations. It is advisable to follow the instructions for use and perform a patch test to assess individual tolerance.

✨ Vegan: Yes, this ingredient is synthetic and suitable for vegan formulations.

✨ Please note: Some users may experience allergic reactions or sensitivities when in contact with this ingredient, especially if they have a history of allergies to hair dyes. It is therefore essential to perform a skin tolerance test before use.

Found in: Mainly used in permanent or semi-permanent hair dyes.

Comedogenic rating: 

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