Database/Antistatic/Polyquaternium-18
100% petroleum · ISO 16128

Is Polyquaternium-18 natural?

No. All repeat-unit fragments derive from petrochemical ethylene oxide, dimethylamine and a pimeloyl (heptanedioyl) linker.

INCI namePolyquaternium-18
FunctionAntistatic · Film Forming
FeedstockManufactured analogously to Polyquaternium-17 but with a one-carbon-longer…

How we scored it

Repeat unit built from ethylene oxide chain, dimethylamine, pimeloyl (heptanedioyl) linker, propanediamine, all petrochemical = 0/MW = 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 analogously to Polyquaternium-17 but with a one-carbon-longer (pimeloyl) diacyl crosslinker, all from petrochemical feedstocks. No natural-feedstock route exists.

In plain English

A synthetic conditioning polymer, closely related to Polyquaternium-17, that reduces static and forms a light film on hair or skin. Built from petrochemical starting materials.

CosIng definition: Poly[oxy-1,2-ethanediyl(dimethyliminio)-1,3-propanediylimino-(1,6-dioxo-1,6-heptanediyl)imino-1,3-propanediyl(dimethyliminio)-1,2-ethanediyl dichloride]

Natural alternatives with the same function

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. 2POLYQUATERNIUM-18. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYQUATERNIUM-18. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYQUATERNIUM-18