How we scored it
Sodium salt of castor oil fatty acids (mainly ricinoleic acid); fatty acid + Na counter-ion both natural = 1.0.
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 saponifying castor oil (from Ricinus communis seeds) with sodium hydroxide. This is a standard soap-making reaction with no petrochemical alternative in commercial use.
In plain English
A soap-like cleansing and emulsifying ingredient made by combining castor oil with sodium. It's a plant-oil-derived soap used in washes and cleansers.
CosIng definition: Fatty acids, castor-oil, sodium salts
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.
- 2SODIUM CASTORATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3SODIUM CASTORATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20CASTORATE