Database/Cleansing/Oleth-23
Mostly petroleum · ISO 16128

Is Oleth-23 natural?

Mostly not. Oleyl alcohol comes from natural vegetable oil; the 23 ethylene oxide units added to make it water-dispersible are petrochemical.

INCI nameOleth-23
CAS9004-98-2
FunctionCleansing · Cleansing Surfactant
FeedstockOleyl alcohol, derived from vegetable oils such as…

How we scored it

Oleyl alcohol C18H36O 268.5 Da (natural) + 23xEO (C2H4O 44.05) 1013.2 Da (petrochemical) = 268.5/1281.6 = 0.21
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

Oleyl alcohol, derived from vegetable oils such as palm or olive, is ethoxylated with ethylene oxide from petrochemical sources to give a water-dispersible surfactant.

In plain English

Oleyl alcohol, a fatty alcohol from natural oils, reacted with a long chain of ethylene oxide (a petrochemical building block) to make it water-soluble. Works as a mild cleansing ingredient in wash-off products.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-9-(Z)-octadecenyl-.omega.-hydroxy (23 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. 2OLETH-23. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3OLETH-23. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=OLETH-23