Science
Mechanism of Action
This ingredient functions as a coupler in hair coloring processes. Its unique molecular structure, featuring multiple amino groups, facilitates chemical reactions with primary intermediates and an oxidizing agent, such as hydrogen peroxide. This reaction creates stable chromophores inside the hair, which modifies and intensifies the resulting hair color.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
This ingredient's primary application is in hair dye formulations; it is not typically used as a topical skincare active, rendering dusting analysis irrelevant for skin-focused products.
The Formula
Formulation
Stability
Standard solutions of the test substance in a 30/70 acetonitrile/Milli-Q water mixture demonstrated stability for at least 42.8 hours when stored in the dark at room temperature.
Safety
Safety Profile
European regulatory bodies, including the SCCNFP (1999) and SCCP (2007), have assessed this substance for use in hair dye formulations. The SCCP established a maximum on-head concentration of 1.8% (calculated as tetrahydrochloride salt, corresponding to 1.2% of the free base) for oxidative hair dyes. Both bodies noted its sensitizing potential, with SCCNFP recommending a warning label. PubChem identifies hazards such as 'May cause an allergic skin reaction' (H317) and 'Causes serious eye irritation' (H319). It is regulated in Europe under the Cosmetics Directive.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Primarily a hair dye component with no established skincare benefits and a noted high risk of sensitization and irritation, rendering it unsuitable for precision skincare formulations.
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References
Sources