Octyldodeceth-5
AKA “PEG-5 octyl dodecyl ether, Octyldodecanol ethoxylate, UNKNOWN
Synthetic
Ingredient Facts
Octyldodeceth-5
AKA: PEG-5 octyl dodecyl ether, Octyldodecanol ethoxylate, UNKNOWN
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Synthetic
Clean
A gentle emulsifier that helps blend water and oil-based ingredients, creating a smooth, unified texture in skincare and cosmetics.
Effective at 1.6%
CAS #
32128-65-7
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifier
Mixes Oil & Water
Traditional Use
Synthetic polyethylene glycol ether developed in the mid-20th century as a non-ionic surfactant and emulsifier for cosmetic formulations. No traditional use; created to improve stability and texture in modern skincare and cosmetic products.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.2%
3.0%
0%4%
Effective Range
CIR reported use: 0.7-2 | 1-3 | 0.2-3
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR