1-Naphthol
INCI: 1-NAPHTHOL
CAS 90-15-3 EC 201-969-4
1-naphthol (CI 76605)
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details
Description
1-naphthol (CI 76605)
Purpose
Function
Oxidative hair dye intermediate (coupler)
Profile
Properties
Silicone
Silicone free
Compliance
Regulatory Status
EU
Restricted
Safety
MODERATE
US
Permitted
EU Max Concentration2.0%
Absorptionhigh
Sensitizationhigh
MoSadequate
NOAEL40 mg/kg
ConcernModerate
Flags
potential-allergenendocrine_disruptoreu_cosing_listed
Verdict
Skin/eye irritant; sensitizer; restricted to oxidative hair dye only; mandatory consumer warning on label ("Can cause an allergic reaction"); do not use on eyebrows/eyelashes; not for use in other cosmetic product types
US Note
Permitted as coal-tar hair dye with caution statement (21 CFR §73.2190); patch test warning required
Assessment
Ratings
Reference