Basic Blue 99 (CAS 68123-13-7) is a cosmetic cosmetic ingredient functioning as Hair colorant (naphthoquinoneimine dye), hair conditioning agent. NOAEL 37 mg/kg bw/day (PDF-verified against ToxValDB ECHA IUCLID); EU Regulation 1223/2009 status: prohibited; 2 safety opinions reviewed (sccs). Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
US NotesCoal tar hair dye exemption applies. CIR 2007: safe as a hair dye ingredient. Re-opened Dec 2022 due to composition variability concerns. Non-hair dye uses (nail polish) are unlawful without FDA color additive approval.
For full compliance data across multiple jurisdictions, use the
Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Basic Blue 99.
Calculate MoS for your specific formulation with the
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Toxicological Studies
5 study endpoints found for Basic Blue 99. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.
Endpoint
Value
Route
Species
Study Type
Source
NOAEL
=200 mg/kg
-
-
NOAEL study
SCCS_vision_codex
NOAEL
=200 mg/kg
-
-
NOAEL study
SCCS_vision_codex
NOAEL
=200 mg/kg
-
-
NOAEL study
SCCS_vision_codex
NOAEL
=200 mg/kg
-
-
NOAEL study
SCCS_vision_codex
NOAEL
=50 mg/kg bw/day
oral
Rat
reproduction developmental
ToxValDB_ECHA_IUCLID
Safety Opinions
Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).
sccsSCCS/1683/252 February 2026
Verdict: safe
for which a TTC approach would be applicable. The SCCS considers a purity of only 80 % to be too low for the safety evaluation of a synthetic compound, particularly when the test material shows marked differences from the batches used in toxicological studies. SCCS/1683/25 Final version Scientific Advice on
cir
Verdict: unknown
Pre-Calculated Safety Assessment
Pre-calculated NOAEL → SED → MoS audit trail for Basic Blue 99 across SCCS product categories, with measured dermal absorption where available.
Sensitization Profile
Contact sensitization data for Basic Blue 99 based on clinical patch test studies and IFRA standards.
Sensitization Rate
low
Allergen Class
dye
EU Allergen Listed
no
Patch Test Positive Rate
0.2%
Cross-reactivity Group
para-amino-group
Reaction Type
contact-dermatitis
Source: IVDK; NACDG; ESSCA
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
Ceased manufacture
Substance Type
SUBSTANCE
SVHC Candidate
No
Expanded Jurisdictional Detail
Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.
JPKR Japan/Korea Cosmetics
Korea (Restricted): max 2.0%
Additional Jurisdictional Restrictions (1)
Jurisdiction
Status
Max %
Product Type
CN
permitted_hair_dye
3
Non-oxidative hair dye (direct)
Expanded Dermal Absorption Data
Cross-database dermal penetration: EPA Dryad physics-based, Roberts Mendeley permeation, and SCCS-aggregated measured values.
Aggregated DA Values (1 records across 5 sources)
Type
DA %
Method
Skin Model
SCCS Ref
measured
50.0
method=measured
-
-
Additional Ingredient Properties
3 property records from structured ingredient metadata.
children; Europe; Personal carechildren; Europe; Personal careEurope; Personal care - hair coloringEurope; Personal care - hair coloringEurope; Personal care - hair coloringEurope; Personal care - hair coloringInternational Journal of Toxicology
Australian Status
AICIS status:listed
Frequently Asked Questions
Is Basic Blue 99 safe in cosmetics?
Basic Blue 99 has a safety rating of "MODERATE" in our database. EU status: prohibited. US status: permitted. 5 toxicological study endpoint(s) are available in our database. This ingredient has been reviewed by sccs and cir.
Is Basic Blue 99 allowed in the EU?
Basic Blue 99 EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Basic Blue 99 do in cosmetics?
Basic Blue 99 functions as: Hair colorant (naphthoquinoneimine dye), hair conditioning agent. It is classified as a cosmetic ingredient in our database. CAS number: 68123-13-7.
What is the NOAEL for Basic Blue 99?
The NOAEL (No Observed Adverse Effect Level) for Basic Blue 99 is =200 mg/kg based on a NOAEL study study via oral route in rat. A total of 5 study endpoints are available. Source: SCCS_vision_codex.
Is Basic Blue 99 used outside cosmetics?
Basic Blue 99 also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does Basic Blue 99 have different safety status in cosmetics vs industrial chemicals?
Basic Blue 99 is prohibited in EU cosmetics but has active industrial GHS classifications (H318).
Compliance Tools
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