STEARETH-50 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

STEARETH-50

Safety grade: A

Steareth-50 is a gentle cleaning agent made by combining stearic acid (a fatty acid) with other molecules to help it mix with water. It's commonly used in skincare products to remove dirt and oil while creating a smooth gel texture.

This ingredient works as a cleanser and surfactant to remove impurities from the skin, while also helping to thicken and stabilize gel-based cosmetic formulations.

Graded using: COSING.

Last verified: May 26, 2026