AMMONIUM THIOGLYCOLATE is graded C** (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.

AMMONIUM THIOGLYCOLATE

Safety grade: C**

This is a chemical compound that breaks down the protein structure in hair, making it weak enough to remove or reshape. It's the active ingredient in most hair removal creams and chemical hair straightening or perming products.

This ingredient works as a reducing agent that breaks chemical bonds in hair proteins, allowing hair to be dissolved for removal or chemically restructured for permanent straightening or waving.

Graded using: COSING.

Last verified: May 26, 2026

Safer alternatives to AMMONIUM THIOGLYCOLATE

Other Reducing ingredients