# POLYURETHANE-51

URL: https://app.greenveil.ai/ingredients/ingredient_inci_polyurethane_51
Categories: beauty
Functions: Nail conditioning
Identifier: POLYURETHANE-51

> POLYURETHANE-51: Used in cosmetics as a nail conditioning agent. 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 — Polyurethane-51 is a copolymer made by reacting 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate (HEMA), 1,2-Butanediol (q.v.), poly(1,4-butanediol) and 1,3-bis(isocyanatomethyl)cyclohexane.

## 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/89464

_Assessed by Greenveil._