PPG-40 Butyl Ether
AKA “Polypropylene Glycol-40 Butyl Ether, PPG Butyl Ether”
Skin Conditioning
Ingredient Facts
Ppg-40 butyl ether
AKA: Polypropylene Glycol-40 Butyl Ether, PPG Butyl Ether
Skin Conditioning · Hair Conditioning · EWG: 1
Synthetic
Skin Conditioner
Hair Care
Clean
Polyoxypropylene (40) butyl ether
CAS #
9003-13-8
Form
Liquid
See origin →
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
Synthetic humectant and solvent developed in the cosmetics industry. Used to improve product stability, moisture retention, and texture in skincare formulations.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Amended Final Report on the Safety Assessment of PPG-40 Butyl Ether with an Addendum to Include PPG-2, -4, -5, -9, -12, -14, -15, -16, -17, -18, -20, -22, -24, -26, -30, -33, -52, and -53 Butyl Ether
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Final Report on the Safety Assessment of PPG-40 Butyl Ether
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
PPG-40 Butyl Ether
European Commission
EU Cosmetic Ingredient Database (CosIng)
PPG-40 Butyl Ether
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Amended final report on the safety assessment of PPG-40 butyl ether with an addendum to include PPG-2, -4, -5, -9, -12, -14, -15, -16, -17, -18, -20,
Lanigan RS, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
Amended final report on the safety assessment of PPG-40 butyl ether with an addendum to include PPG-2, -4, -5, -9, -12, -14, -15, -16, -17, -18, -20,
Lanigan RS, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
Amended final report on the safety assessment of PPG-40 butyl ether with an addendum to include PPG-2, -4, -5, -9, -12, -14, -15, -16, -17, -18, -20,
Lanigan RS, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
Verified Jun 2026
Data: CosIng · EWG · CIR