Fragrance avoidance
Nothing to weigh for this context yet.
We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.
- beauty
- industrial
Ammonium thioglycolate
CAS 8046-21-7
Also registered as 4 other CAS numbers
34316-71-7 · 67124-12-3 · 860540-22-3 · 5421-46-5
Concern score
Not assessed — no hazard data yet.
Ammonium thioglycolate in plain language
Also known as Acetic acid, 2-MERCAPTO-, ammonium salt (1:1) · Acetic acid, mercapto-, monoammonium salt · Ammonium sulfanylacetate · Thiofaco A-50 · Thioglycolic acid ammonium salt · azanium 2-sulfanylacetate
Show all 15 names
Acetic acid, 2-mercapto-, ammonium salt · Acetic acid, mercapto-, monoammonium salt (1:1) · Ammonium mercaptoacetate · Ammonium thioglycollate · Ec 226-540-9 · monoammonium salt Mercaptoacetic acid · ammonium salt Thioglycollic acid · UNII-6P9E788VZZ · Usaf MO-2
Used in cosmetics as a depilatory, a hair waving or straightening agent and a reducing agent. Ammonium Thioglycolate is the ammonium salt of Thioglycolic Acid.
- Depilatory
- Hair waving or straightening
- Reducing
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
Regulation
No restrictions found. Ammonium thioglycolate appears in these published regulatory listings.
- Found in consumer products
- Beauty
- Industrial
EUCosIngActiveAmmonium Thioglycolate is the ammonium salt of Thioglycolic Acid that conforms to the formula: Restriction: III/2a
- Ammonium Thioglycolate is the ammonium salt of Thioglycolic Acid that conforms to the formula: Restriction: III/2aSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 9 composition records across product categories including Laboratory supplies, Personal care. EPA CPDat classifies this chemical for functional uses including Reducing agent, Depilatory, Hair waving or straightening.
- EPA CPDat observed this chemical in 9 composition records across product categories including Laboratory supplies, Personal care. EPA CPDat classifies this chemical for functional uses including Reducing agent, Depilatory, Hair waving or straightening.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for Ammonium thioglycolate. 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 Ammonium thioglycolate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EPA Chemical and Products Database
exposure · updated July 2016
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
No signal in this context
Where it has been recorded
How often EPA CPDat has listed Ammonium thioglycolate in a product composition. These are source records, not Greenveil catalog products.
Source records
9
Named organisations
2
Laboratory suppliesPersonal care
Typical roles
DepilatoryHair waving or straighteningReducing