Basic Blue 9
INCI: BASIC BLUE 9
CAS 61-73-4 EC 200-515-2
Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride (CI 52015)
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details
Description
Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride (CI 52015)
Purpose
Function
Hair colorant (phenothiazinium dye); biological stain and pharmaceutical agent
Profile
Properties
Silicone
Silicone free
Compliance
Regulatory Status
EU
Permitted
Safety
MODERATE
US
Restricted
EU Max ConcentrationII/1306
Absorptionmoderate
Sensitizationmoderate
MoSnot established
NOAEL1 mg/kg
ConcernModerate
Flags
potential-allergencoloranteu_banned_cosmeticseu_cosing_listed
Verdict
Photosensitizer that generates reactive oxygen species upon light exposure; known to cause serotonin syndrome with MAOIs/SSRIs at systemic doses. Not evaluated by SCCS or CIR for cosmetic use. May cause staining to skin and nails.
US Note
Approved as a pharmaceutical (prescription drug) but not approved as a cosmetic color additive. Coal tar hair dye exemption may apply.
Assessment
Ratings
Reference