Polyurethane-58
A cosmetic ingredient used as film forming, hair fixing, plasticiser in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Polyurethane-58 is a complex polymer made by reacting polytetramethylene ether glycol, 2,2-dimethylolpropionic acid and meta-tetramethylenexylenediisocyanate to form a prepolymer. The prepolymer is dispersed in water with 2-dimethylamino-2-methylpropanol as neutralizer and chain-extended with ethylenediamine.
What does it do?
Polyurethane-58 is listed in the EU cosmetic ingredient inventory with the following declared functions:
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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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Hair fixing
holds hair in a desired style, typically through a flexible film coating each strand
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Plasticiser
adds flexibility to film-forming polymers, e.g. in nail polish or mascara
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Skin conditioning
improves the appearance, feel, and condition of skin
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Skin protecting
helps shield skin from external environmental factors
EU regulatory status
Polyurethane-58 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 Polyurethane-58?
Polyurethane-58 is a cosmetic ingredient catalogued in the EU CosIng database. Polyurethane-58 is a complex polymer made by reacting polytetramethylene ether glycol, 2,2-dimethylolpropionic acid and meta-tetramethylenexylenediisocyanate to form a prepolymer. The prepolymer is dispersed in water with 2-dimethylamino-2-methylpropanol as neutralizer and chain-extended with ethylenediamine.
Is Polyurethane-58 allowed in cosmetics in the EU?
Yes. Polyurethane-58 is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Polyurethane-58 do in cosmetic products?
Polyurethane-58 is declared in the EU cosmetic ingredient inventory with these functions: film forming, hair fixing, plasticiser, skin conditioning, skin protecting.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 12/11/2014