ALUMINUM TRISTEARATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

ALUMINUM TRISTEARATE

Safety grade: A

Aluminum tristearate is a white powder made from aluminum and stearic acid (a fatty acid). It's commonly used in powder-based cosmetics to help keep products smooth and prevent clumping.

This ingredient prevents caking and clumping in powders, makes products feel smooth and silky, helps stabilize mixtures, and gives products a more opaque or matte appearance while controlling thickness.

Graded using: COSING.

Last verified: May 26, 2026