Science
Mechanism of Action
This ingredient is not designed for skincare applications but functions in hair coloring by penetrating the hair cuticle as a small colorless molecule, then reacting with primary intermediates under oxidative alkaline conditions to form large pigmented compounds that become trapped in the hair cortex
Research
Clinical Evidence
High confidence1.25%
Key findings
- 01 Maximum safe concentration for hair dye applications established by regulatory assessment, excluding sensitization potential
Transparency
Dusting Analysis
Not applicable for skincare formulations as this ingredient is restricted to hair coloring applications only
The Formula
Formulation
Stability
Maintains stability in aqueous solutions under oxygen-free conditions but requires protection from light and air to prevent unwanted oxidation reactions
Conflicts
- Oxidizing agents (except during intended use)
- Strong acids
- Nitrosating agents
Safety
Safety Profile
Classified as potential skin sensitizer with use restricted to hair dyes only; prohibited for application near eyes including eyelashes and eyebrows due to severe irritation risk
Your Skin
Skin Compatibility
Our Assessment
Verdict
Not suitable for skincare applications due to its specific hair dye function and significant sensitization potential.
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References
Sources