PPG-26
AKA “Polypropylene Glycol 26”
Skin Conditioning
Ingredient Facts
PPG-26
AKA: Polypropylene Glycol 26
Skin Conditioning · Skin Conditioning · EWG: 4
Synthetic
Skin Conditioner
Not Clean
Poly[oxy(methyl-1,2-ethanediyl)], .alpha.-hydro-.omega.-hydroxy- (26 mol PO average molar ratio)
CAS #
25322-69-4
Form
Liquid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
Traditional Use
A synthetic polypropylene glycol polymer developed mid-20th century. Used in cosmetics as a humectant and viscosity modifier with no traditional or historical cosmetic use prior to its synthesis.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Amended Final Report on the Safety Assessment of PPG-9-Buteth-12, PPG-12-Butheth-16, PPG-26-Buteth-26, and PPG-28-Butheth-35
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Final Report on the Safety Assessment of PPG-12-Buteth-16, PPG-9-Buteth-12, PPG-26-Buteth-26 and PPG-28-Buteth-35
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
PPG-26
European Commission
EU Cosmetic Ingredient Database (CosIng)
PPG-26 Butyl Ether
European Commission
EU Cosmetic Ingredient Database (CosIng)
PPG-26-Buteth-26
European Commission
EU Cosmetic Ingredient Database (CosIng)
PPG-26/HDI Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
PPG-26-Buteth-26
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: CosIng · EWG · CIR