Database/Film Forming/Polyurethane-41
100% petroleum · ISO 16128

Is Polyurethane-41 natural?

No. Butanediol, polytetramethylene glycol and isophorone diisocyanate are all petrochemical; the polymer contains no natural-origin fragment.

INCI namePolyurethane-41
FunctionFilm Forming · Hair Conditioning
FeedstockBuilt entirely from petrochemical intermediates: 1,4-butanediol, polytetramethylene glycol,…

How we scored it

1,4-Butanediol, polytetramethylene glycol and IPDI are all petrochemical monomers; no natural fragment present.
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

Built entirely from petrochemical intermediates: 1,4-butanediol, polytetramethylene glycol, and isophorone diisocyanate. No natural-origin route exists.

In plain English

A film-forming polymer made entirely from synthetic, petroleum-derived building blocks. It forms a flexible coating used on hair and skin.

CosIng definition: Polyurethane-41 is a copolymer of 1,4-Butanediol, polytetramethylene glycol and isophorone diisocyanate (IPDI) monomers.

Natural alternatives with the same function

Abies Balsamea Resin 100% natural origin

A sticky resin tapped from balsam fir trees, used for its piney scent and to form a thin…

 Acacia Senegal Gum 100% natural origin

The dried gum exuded from the acacia tree, collected by tapping the bark. Used to form a film…

 Albumen 100% natural origin

Egg white. Used in cosmetics to form a film on skin or hair and to help condition them.

 Amorphophallus Konjac Root Extract 100% natural origin

A root extract from the konjac plant that helps form a light film on skin and hair and…

 Astragalus Gummifer Gum 100% natural origin

A natural plant gum, known as tragacanth, harvested from a Middle Eastern shrub. Used as a thickener and…

 Aureobasidium Pullulans Ferment Extract 100% natural origin

An extract of the liquid left after the yeast-like fungus Aureobasidium pullulans is grown on sugars in a…

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-41. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYURETHANE-41. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYURETHANE-41