# SILICONE QUATERNIUM-31

URL: https://app.greenveil.ai/ingredients/ingredient_inci_silicone_quaternium_31
Categories: beauty
Functions: Hair conditioning
Identifier: SILICONE QUATERNIUM-31

> SILICONE QUATERNIUM-31: Used in cosmetics as a hair conditioner. 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 — Silicone Quaternium-31 is a complex silicone polymer formed by the reaction of glycidoxy-terminated polydimethylsiloxane, a PEG-8/PPG-3 block copolymer which is terminated with 2-aminopropyl groups, and N,N,N',N'-tetramethyl-1,6-hexanediamine. Lauric Acid and Acetic Acid are used to neutralize the residual amine 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/99917

_Assessed by Greenveil._