# POLYESTER-40

URL: https://app.greenveil.ai/ingredients/ingredient_inci_polyester_40
Categories: beauty
Functions: Film forming
Identifier: POLYESTER-40

> POLYESTER-40: Used in cosmetics as a film former. Canonical ingredient record built from 1 public-source records. Compiled from 1 published data source.

## Safety assessment

- Chemical concern: not yet assessed
- Is it a concern? We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
- Rationale: Canonical ingredient record built from 1 public-source records.

## Regulatory status

- EU: Active — Polyester-40 is a copolymer that is formed by the condensation of hydrogenated dimer acids and hydrogenated dimer alcohols. The copolymer is capped with Stearic Acid (q.v.). The hydrogenated dimer acids are made from Rapeseed Acid by reacting the unsaturated fatty acids followed by hydrogenation. The dimer alcohols are produced by reducing the acid groups on the hydrogenated dimer acids to convert them to hydroxyl groups.

## Expert safety opinions

- SCCS (EU Scientific Committee on Consumer Safety): no opinion on file.
- CIR (Cosmetic Ingredient Review (US expert panel)): no opinion on file.

## Data sources

- CosIng (updated 2026-09-23): https://ec.europa.eu/growth/tools-databases/cosing/details/99086

_Assessed by Greenveil._