How we scored it
Polyhydroxystearic acid, polyglycerin-4, sebacic acid and isostearic acid are all oleochemical/castor-derived fragments → 4/4 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
Polycondensation of castor-oil-derived polyhydroxystearic acid and sebacic acid with vegetable-glycerin oligomer and isostearic acid. A petrochemical sebacic-acid route from cyclohexane also exists; check supplier.
In plain English
An emulsifier that helps blend oil and water in creams and lotions. It is a polyester built from plant-oil-derived fatty acids and glycerin.
CosIng definition: Polyester-6 is a polymer formed by the condensation of Polyhydroxystearic Acid, Polyglycerin-4 Sebacic Acid and Isostearic Acid
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.
- 2POLYESTER-6. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3POLYESTER-6. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYESTER-6