How we scored it
Polyphosphoric acid sodium salt; phosphate and sodium are natural-origin mineral counter-ions → 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
Produced from phosphate rock (mineral feedstock) converted to phosphoric acid and neutralized with sodium, with a condensation/dehydration step building the polyphosphate chain. No alternative synthetic feedstock is used.
In plain English
A mineral salt used to bind trace metals in formulas, helping products stay stable and preventing them from becoming cloudy or discoloured over time.
CosIng definition: Polyphosphoric acids, 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 POLYPHOSPHATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3SODIUM POLYPHOSPHATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20POLYPHOSPHATE