Database/Cleansing/Stearamidopropylamine Oxide
Mostly natural · ISO 16128

Is Stearamidopropylamine Oxide natural?

Mostly. The fatty acyl chain is natural; the dimethylaminopropylamine head and its N-oxide are petrochemical.

INCI nameStearamidopropylamine Oxide
CAS25066-20-0
FunctionCleansing · Foam Boosting Surfactant
FeedstockStearoyl acid amidated with DMAPA and oxidised with…

How we scored it

Stearoyl C18H35O 267.5 Da (oleochemical, natural) + amidopropyl-dimethylamine-oxide head C5H13N2O 117.2 Da (DMAPA, petrochemical); total C23H48N2O2 384.6 Da → 0.70. Same method as Oleamidopropylamine Oxide.
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

Stearoyl acid amidated with DMAPA and oxidised with hydrogen peroxide.

In plain English

A cleansing and foam-boosting ingredient made by combining stearic acid, a fatty acid from vegetable fats, with a lab-made amine building block, then converting it to an amine oxide. Used in shampoos and cleansers to help create foam and condition hair.

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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. 2STEARAMIDOPROPYLAMINE OXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3STEARAMIDOPROPYLAMINE OXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=STEARAMIDOPROPYLAMINE%20OXIDE