Propylene Glycol Diundecanoate
AKA “Undecanoic acid, propylene glycol diester, EINECS 269-359-0, 2-ethanediyl ester, 1'-(1-methyl-1, 2-ethanediyl) ester”
Synthetic
Ingredient Facts
Propylene glycol diundecanoate
AKA: Undecanoic acid, Propylene glycol diester, EINECS 269-359-0, 2-ethanediyl ester, 1'-(1-methyl-1, 2-ethanediyl) ester
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Occlusive
Skin Conditioner
Synthetic
Clean
A lightweight conditioning agent that smooths skin and helps products glide on effortlessly while creating a protective layer that locks in moisture.
Effective at 1.0%
Formula
C25H48O4
Mol. Weight
412.60
CAS #
68227-47-4
Form
Powder
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
Traditional Use
Synthetic ester developed as a modern cosmetic ingredient for use as an emollient and skin conditioning agent. Part of the propylene glycol ester family created for enhanced formulation stability.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
9.9e-05%
2.0%
0%14%
Effective Range
CIR reported use: 0.000099-2
Regulatory Agencies
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR