Science
Mechanism of Action
Functions as a direct nitro dye by diffusing into hair keratin structures due to its low molecular weight, binding through physical affinity without requiring chemical developers or oxidation reactions
Research
Clinical Evidence
High confidence1%
Key findings
- 01 SCCS percutaneous absorption study at 0.9% showed minimal skin penetration (0.55% of applied dose over 24 hours)
- 02 SCCNFP toxicity assessment at 1.0% established NOAEL of 100 mg/kg bw/day in rat studies
Transparency
Dusting Analysis
Specialized hair dye ingredient with specific regulatory limits, not typically subject to concentration manipulation
The Formula
Formulation
Stability
Maintains stability for minimum 30 minutes under oxidative conditions and demonstrates long-term stability in acidic formulations. Light-sensitive requiring protected storage conditions.
Conflicts
- nitrosating agents
- strong oxidizing agents for extended periods
Safety
Safety Profile
EU regulated under Annex III/218. Maximum 1.0% in non-oxidative formulations, 0.8% on-head concentration for oxidative products. Secondary amine structure creates nitrosation susceptibility.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Specialized hair colorant with established safety profile but limited skincare applications beyond cosmetic hair treatments.
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References
Sources