Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
- beauty
- industrial
HC Red No 8 and its salts
CAS 158006-54-3 · 100/100 · High conf.
Also registered as 4 other CAS numbers
13556-29-1 · 41959-35-7 · 73855-45-5 · 97404-14-3
Concern score
100/100Critical concern based on regulatory listings.
High confidence
HC Red No 8 and its salts in plain language
On cosmetic ingredient lists it appears as “Hc red no. 8”.
Also known as Hc red no. 8 · TETRAHYDRO-6-NITROQUINOXALINE · Quinoxaline, 1,2,3,4-tetrahydro-6-nitro-, monohydrochloride · Tetrahydro-6-nitroquinoxaline and its salts · Quinoxaline, 1,2,3,4-tetrahydro-6-chloro-
Used in cosmetics as a hair dye.
- Hair dyeing
- Critical concern: no hazard classifications on record. It is banned in EU cosmetics.
Why it's flagged
HC Red No 8 and its salts is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — banned
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Regulation
Restrictions first, then routine listings from published regulatory sources.
- EU Annex II — prohibited
- EU prohibited in cosmetics
- Found in consumer products
- Industrial
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.Source →
Expert safety opinions
No expert opinion on file for HC Red No 8 and its salts. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for HC Red No 8 and its salts yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Where it has been recorded
How often EPA CPDat has listed HC Red No 8 and its salts in a product composition. These are source records, not Greenveil catalog products.
Named organisations
1
Typical roles
Hair dyeing