Methoxy PEG/PPG-25/4 Dimethicone

Methoxy PEG/PPG-25/4 Dimethicone 1
Methoxy PEG/PPG-25/4 Dimethicone 2
Methoxy PEG/PPG-25/4 Dimethicone 3
Methoxy PEG/PPG-25/4 Dimethicone 4
AKA: Silicone Surfactant
Synthetic
Cleanser
Emulsifier
Silicone
Not Clean
Methoxy PEG/PPG-25/4 Dimethicone is the methyl ether of an alkyoxylated derivative of Dimethicone containing an average of 25 moles of ethylene oxide and 4 moles of propylene oxide
CAS #
-
Form
Liquid
Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Stabilizes Emulsion
Emulsifier
Anti-Aging Benefits
Antioxidant Protection
Reduces Inflammation
Mixes oil and water
Keeps product blended
Traditional Use
Modern hybrid polymer combining natural gas derivatives with silicone technology, developed in the late 20th century for cosmetics as an emollient and slip agent with water-resistant properties.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
30%
0%42%
Reg. Limit
FDA OTC limit: 30% (Skin Protectant). Source: FDA OTC Monograph, 21 CFR 347.10.
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: CosIng · EWG · CIR