Methoxy PEG-10
AKA “Methoxypoly(Ethylene Glycol) 10, Polyethylene Glycol Methyl Ether 10”
Humectant
Ingredient Facts
Methoxy peg-10
AKA: Methoxypoly(Ethylene Glycol) 10, Polyethylene Glycol Methyl Ether 10
Humectant · Humectant · EWG: 2
Synthetic
Humectant
Solvent
Clean
Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-methoxy- (10 mol EO average molar ratio)
CAS #
9004-74-4
Form
Liquid
See origin →
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks In Moisture
Traditional Use
Synthetic polyethylene glycol derivative developed mid-20th century for cosmetic use as a humectant and solvent to improve product texture and ingredient solubility.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Bis-Methoxy PEG-10 Dimethyl MEA/HDI/Bis-PEG-10 Dimethicone Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methoxy PEG-10
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methoxy PEG-100
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methoxy PEG-10
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Methoxy PEG-100
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: CosIng · EWG · CIR