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SORBITAN DIOLEATE
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A sorbitol-derived non-ionic emulsifier and surfactant consisting of sorbitan esterified with two oleic acid molecules, widely used in cosmetic emulsions to stabilise oil-in-water formulations.
Sorbitan dioleate (Span 85 or trade name) is the diester of sorbitol and oleic acid, functioning as a low-HLB emulsifier and oil phase solubiliser in cosmetic formulations. It is approved for food use (INS 495) and is listed in EU CosIng as a safe cosmetic ingredient with no restrictions in Annexes II through VI. The ingredient has a molecular weight of 957 g/mol and is too large to penetrate the skin significantly. Its fatty acid (oleic acid) component is a natural skin lipid that supports skin barrier function. Sorbitan esters are extensively used in pharmaceutical and cosmetic emulsions and have an excellent safety record with very low incidence of skin sensitisation.
Skin benefits
- Stable emulsification of cosmetic formulations
- Oleic acid component supports skin barrier lipids
- Delivery vehicle for oil-soluble active ingredients
- Non-ionic nature makes it compatible with wide range of cosmetic ingredients
Known concerns
- Generally very safe; rare reports of contact allergy to sorbitan laurate derivatives
- Oleic acid may increase percutaneous absorption of co-formulated ingredients
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.