Polypropylsilsesquioxane in cosmetics: what it is and what it does

What does Polypropylsilsesquioxane do in a product?

In a cosmetic product, Polypropylsilsesquioxane leaves a thin film on skin, hair or nails. The EU’s CosIng database lists this job for it: film forming.

What other names and numbers does Polypropylsilsesquioxane have?

CAS number

36088-62-7

CosIng reference

58763

Which products contain Polypropylsilsesquioxane?

Open Beauty Facts finds Polypropylsilsesquioxane in the ingredient lists of 10 of the 22,021 products it has a list for, most often sunscreen.

• Sunscreen1

Products with it, by country of sale: Norway 4 · Germany 2 · France 1 · Australia 1.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Polypropylsilsesquioxane turns up, not how much of the market it is.

Sources

The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.

1. European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
2. Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL

Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check