PEG-17 Dimethicone

PEG-17 Dimethicone molecular structure
molecular structure · PubChem
AKA: Polyethylene Glycol 17 Dimethicone
Synthetic
Skin Conditioner
Hair Care
Silicone
Not Clean
OriginDerived from dimethicone, a siloxane polymer, modified with polyethylene glycol chains through ethoxylation. Synthesized by reacting dimethicone with ethylene oxide under catalytic conditions to create water-soluble silicone.
Silicones and siloxanes, dimethyl, hydropoly(oxy-1,2-ethanediyl methyl, trimethylsilyl terminated (17 mol EO average molar ratio)
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.48%
Rinse-off0.79%
0%50%100%
CIR reported use · 2014 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR