5-AMINO-4-FLUORO-2-METHYLPHENOL SULFATE
Other
Avoid
CAS Number: 163183-01-5
About 5-AMINO-4-FLUORO-2-METHYLPHENOL SULFATE
A hair-dye ingredient with meaningful toxicology and regulatory concerns. This is the kind of ingredient that earns a very low score for cosmetic safety.
Detailed Analysis
This ingredient is used as a hair-dye intermediate, a class that often raises sensitization and systemic toxicology questions because of reactive aromatic chemistry. EU cosmetics law lists it in Annex II, meaning it is prohibited rather than merely restricted. A banned status dominates the score even if historical use existed in specialty dye products.
What It Does
Known Concerns
- ⚠ EU Annex II prohibited ingredient
- ⚠ Banned hair-dye intermediate
Safety Score
Avoid
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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