PEG-350

AKA: Polyethylene glycol 350, PEG 350

Synthetic

Solvent

Not Clean

Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-, (350 mol EO average molar ratio)

CAS #

25322-68-3

Form

Liquid

Functions

Binding

Solvent

Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.

Holds Formula Together

Dissolves Ingredients

Holds ingredients together

Dissolves other ingredients

Traditional Use

High-molecular-weight polyethylene glycol polymer developed in the mid-20th century. Used as a humectant and solvent in cosmetics to improve hydration and create stable formulations.

EWG

CIR

Safe as used

Pregnancy

Yes

Restricted By

Credo Beauty Whole Foods Premium Body Care Beauty Heroes MADE SAFE EWG VERIFIED

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewed1 paper →

⚖️Regulatory1 listing →

🛡️Safety-assessed0 reviews

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: CosIng · EWG · CIR