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Sorbitan Isostearate
Ingredient Facts
Sorbitan isostearate
Synthetic · Emulsifying
Synthetic
Cleanser
Emulsifier
Clean
This ingredient helps mix oil and water together so your product applies smoothly and doesn't separate. It keeps formulas blended and easy to use.
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
CIR Safety Findings
Not a Sensitizer
CIR Expert Panel found no sensitization concern, Not an Irritant : CIR Expert Panel found no irritation concern, Phototoxicity Concern : CIR Expert Panel flagged potential phototoxicity
Concentration Guide
Industry Max
Industry typically uses up to 6.5% in leave-on products (92 products reported). Source: CIR Safety Assessment (CIR Seq 682).
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Final Report on the Safety Assessment of PEG-20 Sorbitan Cocoate; PEG-40 Sorbitan Diisostearate; PEG-2, -5, and -20 Sorbitan Isostearate; PEG-40 and -75 Sorbitan Lanolate; PEG-10, -40, -44, -75, and -
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Sorbitan Caprylate, Sorbitan Cocoate, Sorbitan Diisostearate, Sorbitan Dioleate, Sorbitan Distearate, Sorbitan Isostearate, Sorbitan Olivate, Sorbitan Sesquiis
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
PEG-2 Sorbitan Isostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-20 Sorbitan Isostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-5 Sorbitan Isostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-20 Sorbitan Isostearate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Verified Feb 2026
Data: CosIng