Science
Mechanism of Action
Functions as a reactive precursor that undergoes oxidation to create large pigment molecules within hair shafts. On skin contact, it can bind to proteins and trigger immune responses, potentially leading to allergic contact dermatitis in susceptible individuals.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 CIR Expert Panel evaluation demonstrated skin sensitization potential but confirmed safety for hair dye use up to 10% concentration in non-sensitized individuals
Transparency
Dusting Analysis
Not applicable for skincare formulations due to sensitization risks and primary function as hair dye component
The Formula
Formulation
Stability
Exhibits high stability in sulfate salt form but degrades when exposed to air oxidation and light. Maintains optimal stability under alkaline conditions.
Conflicts
- Strong oxidizing agents
- Strong acids
- Acid chlorides
- Acid anhydrides
Safety
Safety Profile
Restricted to hair dye applications only, prohibited for use on eyelashes and eyebrows. Known potent skin sensitizer requiring careful handling.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Unsuitable for precision skincare due to high sensitization potential and restriction to hair dye applications only.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources