2,3-Diamino-6,7- dihydro-1H,5H- pyrazolo[1,2-a] Pyrazol-1-one dimethanesulfonate
Other
Moderate
CAS Number: 857035-95-1
About 2,3-Diamino-6,7- dihydro-1H,5H- pyrazolo[1,2-a] Pyrazol-1-one dimethanesulfonate
A cosmetic ingredient used in product formulations. Its specific function may vary depending on the product type and formulation. Exercise caution due to limited available safety data.
Detailed Analysis
This pyrazolo-pyrazolone derivative is a heterocyclic diamine that functions as a primary intermediate in oxidative hair dye systems. It couples with developer components to form stable azo dyes within the hair shaft. While not specifically listed in EU Regulation 1223/2009 Annexes II or III, hair dye intermediates are subject to the general safety assessment requirements of SCCS. The diamine functionality raises potential sensitization concerns, and the methanesulfonate counterion may contribute to mild skin irritation in susceptible individuals. Concentration limits for oxidative hair dye systems apply.
Skin Benefits
- ✓ Functions as hair dye intermediate
- ✓ Enables broad colour palette in oxidative systems
Known Concerns
- ⚠ Potential skin and respiratory sensitization
- ⚠ Limited specific EU regulatory assessment
- ⚠ Requires controlled oxidative use conditions
Safety Score
Moderate
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.