STEARETH-11 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

STEARETH-11

Safety grade: A

Steareth-11 is a waxy substance created by chemically combining stearic acid (a fatty acid) with ethylene oxide. It works like a bridge that helps oil and water blend together smoothly in cosmetic products.

This ingredient acts as an emulsifier and surfactant, allowing oil and water-based ingredients to mix evenly and stay blended together, while also helping products spread smoothly and feel light on the skin.

Graded using: COSING.

Last verified: May 26, 2026