STEARETH-40 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

STEARETH-40

Safety grade: A

Steareth-40 is a cleansing agent made by chemically combining a natural fatty substance (stearic acid) with other compounds. It helps dissolve dirt and oil from skin and hair while also helping products achieve a gel-like texture.

This ingredient works as a gentle cleanser and thickener that removes impurities from the skin and hair while helping the product maintain a smooth, gel-like consistency.

Graded using: COSING.

Last verified: May 26, 2026