Undecylenoyl Inulin
AKA “Undecylenoyl Inulin”
Emollient
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Ingredient Facts
Undecylenoyl inulin
Emollient · Emollient · EWG: 4
Synthetic
Emollient
Emulsifier
Skin Conditioner
Not Clean
Inulin, 10-undecenoyl derivatives
CAS #
224580-84-1
See origin →
Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
Traditional Use
A modern cosmetic ingredient combining undecylenic acid with inulin (a prebiotic polysaccharide). Created to provide antimicrobial and skin-conditioning benefits in contemporary personal care formulations.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR