Science
Mechanism of Action
Functions as a coupler in oxidative hair dyeing by undergoing polymerization reactions with hydrogen peroxide and other dye precursors to create large pigment molecules. On skin contact, it acts as a hapten that binds to skin proteins, potentially triggering immune sensitization responses.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Any presence of this banned ingredient in skincare products represents regulatory non-compliance and safety concerns
The Formula
Formulation
Stability
Exhibits stability only under acidic conditions below pH 5; becomes highly unstable and prone to degradation at neutral or alkaline pH levels
Conflicts
- Strong oxidizing agents
- Nitrosating compounds
- Alkaline pH environments
- Hydrogen peroxide systems
Safety
Safety Profile
Completely banned from cosmetic use in EU under Annex II/1215 and other jurisdictions due to potent contact sensitization potential and insufficient toxicological safety data
Your Skin
Skin Compatibility
Our Assessment
Verdict
A banned cosmetic ingredient with documented high sensitization risk that should never appear in skincare products.
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References
Sources