Database/Emulsifying Surfactant/Ceteareth-12
Mostly petroleum · ISO 16128

Is Ceteareth-12 natural?

Mostly not. Natural fatty alcohol blend (cetyl/stearyl) is ethoxylated with 12 mol petrochemical ethylene oxide, which dominates the final mass.

INCI nameCeteareth-12
CAS68439-49-6
FunctionEmulsifying Surfactant · Cleansing Surfactant
FeedstockManufactured by ethoxylating cetearyl alcohol (a natural, typically…

How we scored it

Cetearyl alcohol (~256 Da, natural oleochemical C16-18) + 12 mol EO (529 Da, petrochemical) = 785 Da. 256/785 = 0.33.
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 by ethoxylating cetearyl alcohol (a natural, typically oleochemical C16-18 fatty alcohol blend) with 12 mol of petrochemical ethylene oxide. Petrochemical-route fatty alcohol is a minor supplier alternative.

In plain English

An emulsifier that helps mix water and oil in creams. Made from plant/animal-derived fatty alcohols reacted with synthetic ethylene oxide to make them water-compatible.

CosIng definition: C16-18 alcohols, ethoxylated (12 mol EO average molar ratio)

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. 2CETEARETH-12. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3CETEARETH-12. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CETEARETH-12