OLETH-9 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

OLETH-9

Safety grade: A

Oleth-9 is a cleansing and stabilizing ingredient made from oleic acid (a natural fatty acid found in oils) that has been chemically modified. It helps keep different liquids mixed together in cosmetic products.

This ingredient acts as an emulsifier to blend oil and water-based components together, creating a smooth, stable product while also providing gentle cleansing properties.

Graded using: COSING.

Last verified: May 26, 2026