How we scored it
Where it comes from
The dimer acid backbone is made by dimerising and hydrogenating natural linoleic acid from vegetable oil. Ethylenediamine and neopentyl glycol, the other backbone monomers, are petrochemical synthetics.
In plain English
A film-forming resin used in nail polish and lipstick, built mainly from a vegetable-oil-derived fatty dimer acid plus two lab-made building blocks. Gives products flexibility, shine and a smooth skin feel.
CosIng definition: Polyamide-8 is a copolymer of ethylenediamine, neopentyl glycol and hydrogenated dilinoleic acid end-blocked with stearyl alcohol.
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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.
- 2POLYAMIDE-8. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3POLYAMIDE-8. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYAMIDE-8