Oleth-7
AKA “Oleyl Ethoxylate 7, Oleth 7, Polyethylene Glycol Monooleyl Ether”
Surfactant
Ingredient Facts
Oleth-7
AKA: Oleyl Ethoxylate 7, Oleth 7, Polyethylene Glycol Monooleyl Ether
Surfactant · Emulsifying · EWG: 3
Synthetic
Cleanser
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-9-(Z)-octadecenyl-.omega.-hydroxy (7 mol EO average molar ratio)
Effective at 9.03%
CAS #
9004-98-2
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.
Emulsifier
Mixes Oil & Water
Traditional Use
Developed in the mid-20th century as a synthetic polyethylene glycol ether derivative of oleic acid. Used in cosmetics as a surfactant and emulsifier with no significant traditional use history.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.06%
18.0%
0%25%
Effective Range
CIR reported use: 0.1-18 | 0.3-10 | 1-4 | 0.06-10
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR