PEG-9M
AKA “Polyethylene glycol 9M, PEG 9M”
Ingredient
Ingredient Facts
PEG-9M
AKA: Polyethylene glycol 9M, PEG 9M
Ingredient · Emulsion Stabilising · EWG: 4
Synthetic
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy- (9000 mol EO average molar ratio)
CAS #
25322-68-3
See origin →
Functions
Binding
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Holds Formula Together
Stabilizes Emulsion
Controls Viscosity
Holds ingredients together
Keeps product blended
Controls product thickness
Traditional Use
Polyethylene glycol of high molecular weight developed in the mid-20th century as a synthetic polymer. Used in modern cosmetics as a thickening agent, humectant, and texture modifier with no traditional historical use.
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
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR