Surfactant
SODIUM C9-22 ALKYL SEC SULFONATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A branched-chain sulfonate surfactant — foams and cleans well, even in hard water, but can feel drier than amino-acid surfactants. Standard sulfonate caveats: eye irritation at high use; well-tolerated in balanced formulas.
Function
Skin benefits
- Foaming and cleansing surfactant
- Hard-water tolerant
- Stable across pH range
Known concerns
- Sulfonate surfactant — defatting at high use
- Eye/mucosal irritation potential
- Drier feel than amino-acid surfactants
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related surfactants
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.