Database/Emulsifying Surfactant/Beheneth-15
Mostly petroleum · ISO 16128

Is Beheneth-15 natural?

Mostly not. Behenyl (C22) fatty alcohol is oleochemical; the 15 ethylene-oxide units are petrochemical per this site's convention.

INCI nameBeheneth-15
CAS26636-40-8
FunctionEmulsifying Surfactant · Cleansing Surfactant
FeedstockMade by ethoxylating oleochemical behenyl (docosyl) alcohol with…

How we scored it

CosIng text states 15 mol EO average; given formula (C28H58O4/458.8) matches only ~3 EO, a PubChem mismatch, disregarded. Docosanol 326.6 Da (natural) + 15x44.05 EO 660.8 Da (petrochemical) = 987.4 Da -> 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

Made by ethoxylating oleochemical behenyl (docosyl) alcohol with ethylene oxide to an average of 15 mol EO. Ethylene oxide is a petrochemical feedstock; no natural ethoxylation route exists.

In plain English

An emulsifier made by reacting behenyl alcohol, a fatty alcohol from vegetable oil, with ethylene oxide, a petroleum-derived chemical, to help oil and water blend in creams and lotions.

CosIng definition: Docosanol, ethoxylated, 15 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. 2BEHENETH-15. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3BEHENETH-15. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BEHENETH-15