CALCIUM THIOGLYCOLATE HYDROXIDE is graded C (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.
CALCIUM THIOGLYCOLATE HYDROXIDE
Safety grade: C
This is a chemical compound used in hair removal products that works by breaking down the protein structure of hair, making it easier to remove from the skin. It's a key active ingredient in chemical depilatories like hair removal creams.
This ingredient acts as a depilatory agent that dissolves hair at the skin surface by breaking down the protein bonds that give hair its structure.
Graded using: COSING.
- EU COSING — Restricted
Last verified: May 26, 2026
Safer alternatives to CALCIUM THIOGLYCOLATE HYDROXIDE
- AMMONIUM THIOLACTATE — Grade A. Thioglycolic acid salt that breaks down hair protein bonds like the source ingredient.
- MERCAPTOPROPIONIC ACID — Grade A. Reducing agent that dissolves hair structure via protein bond cleavage, similar mechanism.
- THIOLACTIC ACID — Grade A. Thiolactic acid reduces disulfide bonds in hair protein for depilation.
Other Depilatory ingredients
- THIOGLYCERIN — Grade A
- POTASSIUM THIOGLYCOLATE — Grade C**
- COPERNICIA CERIFERA WAX — Grade A
- CALCIUM THIOGLYCOLATE — Grade C**
- THIOGLYCOLIC ACID — Grade D**
- COLOPHONIUM — Grade A