Database/Emulsifying Surfactant/Polyurethane-28
100% petroleum · ISO 16128

Is Polyurethane-28 natural?

No. The dimethicone backbone is 0 by site silicone convention and the isophorone diisocyanate linker is petrochemical; the minor sorbitan-ester end-cap doesn't offset this.

INCI namePolyurethane-28
FunctionEmulsifying Surfactant · Cleansing Surfactant
FeedstockPolyurethane-28 is built on a silicone (dimethicone) diol…

How we scored it

Dimethicone diol (silicone, n=0 by this site's convention) + IPDI (petrochemical, n=0) + sorbitan isostearate end-cap. 0/total≈0.00.
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-28 is built on a silicone (dimethicone) diol reacted with petrochemical isophorone diisocyanate and capped with sorbitan isostearate. The silicone backbone dominates the structure and is scored 0 under this site's silicone convention.

In plain English

A surfactant-like polymer combining a silicone diol with a petrochemical diisocyanate and a sorbitan ester. The silicone backbone is treated as non-natural by this site's convention.

CosIng definition: Polyurethane-28 is a complex polymer formed by the reaction of Bis-Hydroxyethoxypropyl Dimethicone with isophorone diisocyanate (IPDI) and Sorbitan Isostearate.

Natural alternatives with the same function

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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-28. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYURETHANE-28. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYURETHANE-28