PEG-100
AKA “Polyethylene Glycol 100, Polyethylene Glycol 100000, PEG 100000”
Synthetic
Ingredient Facts
PEG-100
AKA: Polyethylene Glycol 100, Polyethylene Glycol 100000, PEG 100000
Synthetic · Humectant · EWG: 4
Synthetic
Humectant
Solvent
Skin Conditioner
Synthetic
Not Clean
A humectant that draws moisture into skin and helps dissolve other ingredients evenly throughout the formula, keeping your complexion hydrated and the product smooth.
CAS #
25322-68-3
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.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Moisturising
Locks In Moisture
Traditional Use
A high-molecular-weight polyethylene glycol synthesized in the mid-20th century. Developed as a modern humectant and solubilizer to replace traditional glycerin in formulations requiring greater water-binding capacity and solvent properties.
Skin Types
●all-skin-types
Best For
Dehydration
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Bis-Lauryl Cocaminopropylamine/HDI/PEG-100 Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methoxy PEG-100
European Commission
EU Cosmetic Ingredient Database (CosIng)
PEG-100
European Commission
EU Cosmetic Ingredient Database (CosIng)
PEG-100 Castor Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
PEG-100 Hydrogenated Castor Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
PEG-100 Lanolin
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methoxy PEG-100
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Development and characterization of topical formulation for maintenance therapy containing sorbitan monostearate with and without PEG-100-stearate.
Schoenfelder H, Wiedemann Y, Lunter DJ
International journal of cosmetic science, 2025
Verified Feb 2026
Data: CosIng · EWG · CIR