Polyisobutene
A cosmetic ingredient used as binding, film forming, viscosity controlling in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Homopolymer of 2-methyl-1 propene
What does it do?
Polyisobutene is listed in the EU cosmetic ingredient inventory with the following declared functions:
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Binding
holds the components of a formulation together, especially in pressed powders and compact makeup
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Film forming
forms a thin continuous film on skin, hair, or nails — used in long-wear makeup, sunscreens, and hairsprays
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Viscosity controlling
adjusts the thickness or flow of a formulation
EU regulatory status
Polyisobutene is allowed for use in cosmetic products in the European Union under Regulation 1223/2009. It is not subject to a specific Annex restriction at the time of writing.
Frequently asked questions
What is Polyisobutene?
Polyisobutene is a cosmetic ingredient catalogued in the EU CosIng database. Homopolymer of 2-methyl-1 propene
Is Polyisobutene allowed in cosmetics in the EU?
Yes. Polyisobutene is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Polyisobutene do in cosmetic products?
Polyisobutene is declared in the EU cosmetic ingredient inventory with these functions: binding, film forming, viscosity controlling.
What is the CAS number of Polyisobutene?
The CAS (Chemical Abstracts Service) number for Polyisobutene is 9003-27-4.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 15/10/2010