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

AMMONIUM THIOLACTATE

Safety grade: A

This is a chemical compound that breaks down the strong bonds holding hair in its natural shape. It's commonly used in hair removal products and hair straightening or waving treatments to chemically alter the hair structure.

Ammonium thiolactate works as a reducing agent that breaks protein bonds in hair, allowing it to be removed, straightened, or permanently waved depending on how it's applied.

Graded using: COSING.

Last verified: May 26, 2026