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

AMMONIUM ALUM

Safety grade: A

Ammonium alum is a naturally occurring mineral salt that has been used for centuries in personal care products. It works by temporarily tightening pores and reducing moisture on the skin's surface.

This ingredient reduces underarm perspiration and acts as an astringent to tighten and tone the skin while minimizing the appearance of pores.

Graded using: COSING.

Last verified: May 26, 2026