Cleansing Agent

Polydimethylsiloxy Peg …

INCI: POLYDIMETHYLSILOXY PEG/PPG-24/19 BUTYL ETHER SILSESQUIOXANE

Reviewed by Kate · Last updated 18 Aug 2026

What Is Polydimethylsiloxy Peg …?

Polydimethylsiloxy Peg/Ppg-24/19 Butyl Ether Silsesquioxane (INCI: POLYDIMETHYLSILOXY PEG/PPG-24/19 BUTYL ETHER SILSESQUIOXANE) is a cosmetic ingredient listed in the EU CosIng inventory. Polymers of methyl silsesquioxanes and polyethylene-polypropylene glycol butyl ester.

Its declared cosmetic functions are humectant, skin conditioning and surfactant.

Source: European Commission CosIng inventory.

From the Clinic

Not sure what your skin actually needs?

Two minutes, a few questions, and we’ll point you at what matters — no guesswork.

Take the skin quiz

Learn More About Skincare Ingredients

Explore our comprehensive ingredient glossary to understand what's in your products.

Browse All Ingredients

Authorised Stockist

Official UK retailer

Tracked Delivery

Free UK shipping over £50

5 Star Rating

Trusted by thousands

Expert Advice

Free consultations