Dimethicone/Silsesquioxane Copolymer
Dimethicone/Silsesquioxane Copolymer is a film forming and hair conditioning ingredient. It’s in 2 products on Poliage, most often foundation. Avoid lists on Poliage that include it: Silicones.
Updated October 21, 2026
What it does
Contains Dimethicone/Silsesquioxane Copolymer: film-forming
Function listed in CosIng
Contains Dimethicone/Silsesquioxane Copolymer: hair-conditioning
Function listed in CosIng
Contains Dimethicone/Silsesquioxane Copolymer: hair-fixing
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 55788, accessed October 22, 2026.
Products that contain Dimethicone/Silsesquioxane Copolymer
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.