Undecyleneth-6
AKA “Undecylenic Alcohol Ethoxylate, Undecyleneth-6
Surfactant
Ingredient Facts
Undecyleneth-6
AKA: Undecylenic Alcohol Ethoxylate
Surfactant · Antimicrobial · EWG: 4
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 →
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
EWG
4
CIR
Safe as used
Pregnancy
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR