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
Cysteamine thiopropionate
Concern score
Not assessed — no hazard data yet.
Cysteamine thiopropionate in plain language
Used in cosmetics as a hair waving or straightening agent. Cysteamine Thiopropionate is the amine salt.
- Hair waving or straightening
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
What we know about this ingredient
Canonical ingredient record built from 1 public-source records.
Regulation
No restrictions found. Cysteamine thiopropionate appears in these published regulatory listings.
EUCosIngActiveCysteamine Thiopropionate is the amine salt that conforms to formula.
- Cysteamine Thiopropionate is the amine salt that conforms to formula.Source →
Expert safety opinions
No expert opinion on file for Cysteamine thiopropionate. 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 Cysteamine thiopropionate 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
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
No signal in this context