Polyester-31
A cosmetic ingredient used as binding, film forming in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Polyester-31 is a polymer formed by the condensation of Diethylene Glycol, Glycol, Neopentyl Glycol, isophthalic acid, Sebacic Acid, and terephthalic acid.
What does it do?
Polyester-31 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
EU regulatory status
Polyester-31 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 Polyester-31?
Polyester-31 is a cosmetic ingredient catalogued in the EU CosIng database. Polyester-31 is a polymer formed by the condensation of Diethylene Glycol, Glycol, Neopentyl Glycol, isophthalic acid, Sebacic Acid, and terephthalic acid.
Is Polyester-31 allowed in cosmetics in the EU?
Yes. Polyester-31 is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Polyester-31 do in cosmetic products?
Polyester-31 is declared in the EU cosmetic ingredient inventory with these functions: binding, film forming.
What is the CAS number of Polyester-31?
The CAS (Chemical Abstracts Service) number for Polyester-31 is 38497-35-7.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 18/04/2018