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Undecyleneth-6
AKA “
Undecylenic Alcohol Ethoxylate, Undecyleneth-6
”
Surfactant
🦆
❤️
👻
Ingredient Facts
Undecyleneth-6
AKA: Undecylenic Alcohol Ethoxylate
Surfactant · Antimicrobial · EWG: 4
WHAT IS IT?
Synthetic
Preservative
Cleanser
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-(10-undecenyl)-.omega.-hydroxy- (6 mol EO average molar ratio)
CAS #
9002-92-0; 68439-50-9; 5274-68-0; 9004-95-9; 9005-00-9; 4536-30-5; 3055-93-4; 3055-94-5; 3055-95-6
See origin →
WHAT'S IT DO?
Functions
Anti-Seborrheic
Antimicrobial
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Controls excess oil
Fights acne
Causing bacteria
Skin Types
●
all-skin-types
Best For
General
IS IT SAFE?
EWG
4
CIR
Safe as used
Pregnancy
—
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA
✔ permitted
CANADA
✔ permitted
Regulatory Agencies
EWG
CIR
FDA
Health Canada
WHAT'S THE PROOF?
Undecyleneth-6
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Verified Jun 2026
Data: CosIng · EWG · CIR