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HYDROXYETHOXY AMINOPYRAZOLOPYRIDINE HCL.

Avoid CAS 1079221-49-0 / HAIR DYEING

Hydroxyethoxy Aminopyrazolopyridine HCl is an oxidative hair dye precursor, primarily functioning to create permanent color within the hair shaft. While effective for its intended purpose in hair coloring, it has no known skincare benefits and is notably identified as a strong sensitizer.

Hair Dyeing Colorant

Science

This ingredient acts as a color precursor, reacting with other chemicals, such as hydrogen peroxide, to form the final dye molecules within the hair shaft. Its mechanism of action for any specific benefits on skin is not established, as its utility is confined to hair coloring applications.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

Hydroxyethoxy Aminopyrazolopyridine HCl is primarily used as an oxidative hair dye and has no known or established benefits for skin. Consequently, it is not an ingredient typically 'dusted' in precision skincare formulations.


The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The substance itself demonstrates stability in deionized water solutions (ranging from 1 mg/ml to 100 mg/ml) for up to 9 days when stored at ambient temperature. A 23±2°C solution exhibited a pH of 3.1±0.1; however, its stability within typical hair dye formulations was not specifically detailed.


Safety

CIR Status
Not reviewed
Max tested
2%
Sensitization risk High

The Scientific Committee on Consumer Safety (SCCS) deems Hydroxyethoxy Aminopyrazolopyridine HCl safe for use in oxidative hair dye formulations at a maximum on-head concentration of 2.0%, with the explicit caveat of its sensitizing potential. It is unequivocally identified as a strong sensitizer, indicating a high risk for allergic contact dermatitis. No specific Cosmetic Ingredient Review (CIR) assessment for this ingredient was found, and its FDA status in cosmetics is under general regulations without specific 'safe' or 'unsafe' pronouncements.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Avoid

Hydroxyethoxy Aminopyrazolopyridine HCl is a strong sensitizer with no established benefits for skin, rendering it unsuitable for precision skincare formulations.


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