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Deceth-7
AKA “PEG-7 Decyl Ether, Decyl Alcohol Ethoxylate”
Surfactant
Ingredient Facts
Deceth-7
AKA: PEG-7 Decyl Ether, Decyl Alcohol Ethoxylate
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Plant Oil
Not Clean
Deceth-7 is the polyethylene glycol ether of decyl alcohol
Effective at 1.6%
CAS #
-
Form
Liquid
See origin →
Functions
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.
Cleansing Surfactant
Emulsifier
Removes Impurities
Mixes Oil & Water
Traditional Use
A 20th-century synthetic surfactant created through ethoxylation for use in cosmetic formulations as an emulsifier and cleansing agent.
Skin Types
●all-skin-types
Best For
General
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
0.2%
3.0%
0%4%
Effective Range
CIR reported use: 0.7-2 | 1-3 | 0.2-3
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR