PEG-7 Methyl Ether
AKA “Polyethylene Glycol 7 Methyl Ether, PEG-7 Methyl Ether”
Ingredient
Ingredient Facts
Peg-7 methyl ether
AKA: Polyethylene Glycol 7 Methyl Ether
Ingredient · Solvent · EWG: 4
Synthetic
Solvent
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-methyl-.omega.-hydroxy- (7 mol EO average molar ratio)
CAS #
9004-74-4
Form
Liquid
See origin →
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Moisturizing
Antimicrobial
Strengthens Barrier
Dissolves other ingredients
Traditional Use
A synthetic humectant and solvent developed in the 20th century as part of the polyethylene glycol family. Serves no traditional use and was created purely for cosmetic formulation purposes to improve texture and hydration.
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