Is Polyurethane-6 natural? NOI 0.00

Q: Is Polyurethane-6 natural?

Polyurethane-6 has a Natural Origin Index (NOI) of 0.00 (scale 0–1) per ISO 16128. Every monomer is a petrochemical diacid, glycol or diisocyanate, and the dimethicone segment is scored zero by this site's convention regardless of its mineral silicon content. An NOI of 0.00 means 0% of its molecular mass is traceable to a natural, renewable source.

How we scored it

All monomers petrochemical (isophthalic/adipic acid, hexylene/neopentyl glycol, DMPA, isophorone diisocyanate); silicone unit is 0.0 by this site's convention. 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

Polyurethane-6 is condensed entirely from petrochemical diacids, glycols and isophorone diisocyanate, with a silicone (dimethicone) segment scored zero by this site's convention. No natural-feedstock content is present.

In plain English

A film-forming ingredient used in hair styling and nail products to leave a flexible, glossy coating. It is built entirely from lab-made diisocyanates, glycols and a silicone unit, with no plant or mineral content.

CosIng definition: Polyurethane-6 is a copolymer of isophthalic acid, adipic acid, hexylene glycol, neopentyl glycol, dimethylolpropanoic acid, isophorone diisocyanate and bis-ethylaminoisobutyl-dimethicone monomers

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References

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.
2POLYURETHANE-6. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
3POLYURETHANE-6. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYURETHANE-6