Polyamide-8 ●
TL;DR. This ingredient is primarily a synthetic film-former and binder. It helps improve adhesion, flexibility, gloss, and wear in color cosmetics, nail products, and long-wear formulas.
What does Polyamide-8 do in a cosmetic formula?
This ingredient is primarily a synthetic film-former and binder. It helps improve adhesion, flexibility, gloss, and wear in color cosmetics, nail products, and long-wear formulas.
Is Polyamide-8 clean?
From a clean-beauty perspective, it has low expected irritation because it is a high-molecular-weight polymer, but it faces restricted-list friction as a persistent synthetic polymer. Quality depends on tight control of residual monomers, amines, and processing solvents.
Is Polyamide-8 sustainable?
This material is generally made from petrochemical-derived feedstocks and is not considered readily biodegradable. In rinse-off or abrasion-prone formats, fine polymer residues can add to environmental persistence concerns.
Is Polyamide-8 COSMOS-approved?
It is not permitted under COSMOS-natural or COSMOS-organic standards as a conventional synthetic polymer outside the allowed ingredient categories. Its Green Chemistry fit is weak due to fossil sourcing and limited biodegradability, even though it is relatively inert in the finished product.
How does Polyamide-8 work chemically?
The molecule is a high-molecular-weight condensation polymer with repeating amide linkages, giving cohesive film formation, pigment binding, and flexibility. It is typically used at low to moderate levels in anhydrous, emulsion, or solvent-based systems, with formulation attention on dispersion, plasticizer balance, and residual monomer or solvent specifications.
Last updated 2026-05-13