Database/Emulsifying Surfactant/Laureth-5
Mostly petroleum · ISO 16128

Is Laureth-5 natural?

Mostly not. Lauryl chain is a natural coconut/palm fatty alcohol; the 5-mole ethylene oxide chain is petrochemical.

INCI nameLaureth-5
CAS3055-95-6
FormulaC22H46O6 · 406.6 Da
FunctionEmulsifying Surfactant · Cleansing Surfactant
FeedstockMade by ethoxylating coconut/palm-derived lauryl alcohol with 5…

How we scored it

Lauryl C12H25-O ~185 Da (natural, incl. own oxygen) natural; 5 mol EO ~220 Da (petrochemical) / 405 total = 0.46
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 coconut/palm-derived lauryl alcohol with 5 moles of ethylene oxide. The lauryl portion is natural; the ethoxylate chain is petrochemical.

In plain English

A mild surfactant made from coconut/palm-derived lauryl alcohol reacted with ethylene oxide. Used as an emulsifier and cleansing ingredient in personal care products.

Natural alternatives with the same function

Structure

2D structure of Laureth-5

2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethanol

PubChem CID 18281 ↗

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. 2Laureth-5. PubChem CID 18281. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3LAURETH-5. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4LAURETH-5. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=LAURETH-5