5-PHENYLHEX-4-EN-2-ONE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

5-PHENYLHEX-4-EN-2-ONE

Safety grade: A

This is a synthetic fragrance ingredient that contributes a pleasant scent to cosmetic products. It belongs to a family of aromatic compounds used to create or enhance specific fragrance notes.

It is used in cosmetic products purely to add or enhance fragrance, helping to give products a pleasant and appealing scent.

Graded using: COSING.

Last verified: May 26, 2026