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 sulfate
CAS 157-09-5
Also registered as 1 other CAS number
16214-16-7
Concern score
Not assessed — no hazard data yet.
Cysteamine sulfate in plain language
Also known as Sulfuric acid--2,2'-disulfanediyldi(ethan-1-amine) (1/1) · Ethanamine, 2,2'-dithiobis-, sulfate (1:1)
Used in cosmetics as a hair waving or straightening agent. Cysteamine Sulfate 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
EPA DSSTox provides the canonical identifier, structure, and synonym profile for this chemical.
Regulation
No restrictions found. Cysteamine sulfate appears in these published regulatory listings.
EUCosIngActiveCysteamine Sulfate is the amine salt that conforms to the formula
- Cysteamine Sulfate is the amine salt that conforms to the formulaSource →
Expert safety opinions
No expert opinion on file for Cysteamine sulfate. 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 sulfate 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.
No signal in this context