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Polyglyceryl-2 Isostearate
AKA “Diglycerol isostearate, Diglyceryl isostearate, Isooctadecanoic acid, ester with oxybis[propanediol], ester with oxybis(propanediol)”
Synthetic
Ingredient Facts
Polyglyceryl-2 isostearate
AKA: Diglycerol isostearate, Diglyceryl isostearate, Isooctadecanoic acid, Ester with oxybis[propanediol], Ester with oxybis(propanediol)
Synthetic · Emollient · EWG: 1
Plant-Derived Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Synthetic
Clean
A natural plant-derived ingredient that helps blend water and oil together, creating smooth, lightweight textures in creams and cleansers.
Effective at 9.7%
CAS #
73296-86-3, 81752-33-2
Form
Liquid
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifier
Antioxidant Protection
UV Protection
Mixes Oil & Water
Traditional Use
A synthetic ester developed in the 20th century for cosmetic use. Provides emulsifying and solubilizing properties in modern skincare formulations.
Skin Types
●all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Concentration Guide
0.1%
19.3%
0%27%
Effective Range
CIR reported use: 0.1-18.8 | 1-19.3
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: CosIng · EWG · CIR