SORBITAN UNDECYLENATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An ester-based emulsifier derived from sorbitol and undecylenic acid, used to blend oil and water phases in cosmetic formulations. The undecylenic acid component can occasionally cause mild irritation in sensitive skin.
Sorbitan Undecylenate is the mono-ester formed by the reaction of sorbitol with undecylenic acid (a fatty acid derived from castor bean oil). It functions as a non-ionic emulsifier and surfactant in cosmetic products, helping to stabilize emulsions and improve texture. Undecylenic acid itself has mild antifungal properties, which may add a secondary benefit in certain formulations. However, undecylenic acid derivatives can be skin-sensitizing in some individuals, warranting a moderate safety score.
Skin benefits
- Functions as a stable emulsifier for oil-in-water formulations
- Improves product texture and consistency
Known concerns
- Mild skin sensitization potential from undecylenic acid moiety
- May cause irritation in sensitive or broken skin
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.