Database/Emulsifying Surfactant/Isoceteth-15
Route-dependent · ISO 16128

Is Isoceteth-15 natural?

It depends. The ethoxylate chain is petrochemical either way; the isocetyl half is natural only when the Guerbet alcohol was built from natural fatty alcohol.

INCI nameIsoceteth-15
FunctionEmulsifying Surfactant
FeedstockIsocetyl alcohol (Guerbet, natural or petrochemical) ethoxylated with…

Why the score varies

This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.

RouteFeedstockNOIShareNotes
isocetyl alcohol from natural fatty alcoholisocetyl (2-hexyldecyl) alcohol from Guerbet dimerisation of coconut or palm-kernel octanol, ethoxylated with 15 EO (petrochemical)0.27isocetyl 241.4 Da natural of 903.2 Da; the 15 EO 660.8 Da are petrochemical
isocetyl alcohol from petrochemical fatty alcoholisocetyl alcohol from Ziegler or oxo octanol, ethoxylated with 15 EO0.00no natural-origin atoms
Ask your supplier. A batch-specific certificate of origin or bio-based carbon test (ASTM D6866) settles which route applies.

How we scored it

Isoceteth-15 903.2 Da = isocetyl fragment 241.4 Da + 15 EO 660.8 Da (petrochemical) + terminal H. Natural-alcohol route 241.4/903.2 = 0.27; petrochemical-alcohol route 0.00. Same treatment as Isoceteth-10.
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

Isocetyl alcohol (Guerbet, natural or petrochemical) ethoxylated with ethylene oxide.

In plain English

An emulsifying ingredient made from a fatty alcohol combined with ethylene oxide, used to help blend oil and water in a formula.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-isohexadecyl-.omega.-hydroxy- (15 mol EO average molar ratio)

Natural alternatives with the same function

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 Arachidyl Glucoside 100% natural origin

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 Behenic Acid 100% natural origin

A long-chain fatty acid from vegetable oil, used to thicken and stabilise creams and conditioners. It is extracted…

 C10-16 Alkyl Glucoside 100% natural origin

A mild, sugar-based cleansing and emulsifying surfactant made by combining plant-derived fatty alcohols (coconut/palm) with glucose from starch.…

 C12-20 Alkyl Glucoside 100% natural origin

A mild, sugar-based cleansing ingredient made from coconut or palm fatty alcohols and glucose; helps cleanse skin and…

 C18-36 Acid 100% natural origin

A blend of long-chain plant fatty acids used as a mild cleanser and thickener, giving body and a…

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