How we scored it
Where it comes from
Isosteareth-25 is made by ethoxylating isostearyl alcohol, typically derived from oleochemical isostearic acid, with 25 moles of petrochemical ethylene oxide. A fully petrochemical isostearyl route also exists as a minor alternative.
In plain English
A cleansing and emulsifying ingredient made from a branched fatty alcohol, typically derived from vegetable oil, combined with 25 units of a petroleum-derived chemical. Most of its weight comes from the petroleum part.
CosIng definition: Polyoxyethylene (25) Isostearyl Ether
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References
- 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.
- 2ISOSTEARETH-25. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3ISOSTEARETH-25. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ISOSTEARETH-25