Database/Nail Conditioning/Polyurethane-49
100% petroleum · ISO 16128

Is Polyurethane-49 natural?

No. Every monomer, diisocyanate, ethoxylated bisphenol A, butanediol and acrylate, is a synthetic petrochemical building block.

INCI namePolyurethane-49
FunctionNail Conditioning
FeedstockManufactured entirely from petrochemical feedstocks: butanediol, an aromatic…

How we scored it

All monomers petrochemical: 1,4-butanediol, xylylene diisocyanate (aromatic), ethoxylated bisphenol A, hydroxybutyl acrylate. 0/total = 0.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Manufactured entirely from petrochemical feedstocks: butanediol, an aromatic diisocyanate, ethoxylated bisphenol A and an acrylate. No natural-origin monomer is used.

In plain English

A synthetic film-forming polymer used in nail products to improve flexibility and adhesion. Built entirely from petrochemical building blocks including diisocyanates and acrylates.

CosIng definition: Polyurethane-49 is a copolymer of poly(1,4-butanediol), 1,3-bis(isocyanatomethyl)benzene, ethoxylated 4,4'-isopropylidenediphenol and 4-hydroxybutyl acrylate.

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References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2POLYURETHANE-49. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYURETHANE-49. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYURETHANE-49