PEG/PPG-25/25 Dimethicone

PEG/PPG-25/25 Dimethicone molecular structure
molecular structure · PubChem
AKA: Silicone Surfactant, Silicone Emulsifier
Synthetic
Cleanser
Emulsifier
Silicone
Clean
OriginSynthesized from dimethicone, a silicone polymer, combined with polyethylene glycol and polypropylene glycol chains. Produced through chemical coupling of silicone with ethoxylated and propoxylated polyether segments via ether linkage synthesis.
Siloxanes and silicones, dimethyl, 3-hydroxypropyl methyl, ethoxylated, propoxylated (25 mol EO, 25 mol PO average molar ratio)
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 664)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 664)
Eye Irritant in Testing
1 study / 1 irritating / reactions slight (CIR 664)
Concentration Guide
Leave-on0.7%
Rinse-off0.7%
0%50%100%
CIR reported use · report published 2014
Regulatory Status
USA✔ permitted
CANADA✔ permitted
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR