Thiodiglycolic Acid
INCI: THIODIGLYCOLIC ACID (ALSO KNOWN AS DITHIOGLYCOLIC ACID / MERCAPTODIACETIC ACID)
Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Structural similarity to Annex III-regulated thioglycolic acid; strong reducing properties; pH-dependent irritation; requires careful concentration limits and pH control
Frequently Asked Questions
Is Thiodiglycolic Acid safe in cosmetics?
Structural similarity to Annex III-regulated thioglycolic acid; strong reducing properties; pH-dependent irritation; requires careful concentration limits and pH control The EU classifies Thiodiglycolic Acid as "restricted". Safety rating: MODERATE.
Is Thiodiglycolic Acid allowed in the EU?
Thiodiglycolic Acid EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.
What does Thiodiglycolic Acid do in cosmetics?
Thiodiglycolic Acid functions as: Reducing agent. It is classified as a cosmetic ingredient in our database. CAS number: 505-73-7.
What is the Margin of Safety for Thiodiglycolic Acid?
not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
Check Thiodiglycolic Acid compliance across multiple jurisdictions:
Related Ingredients
Is Thiodiglycolic Acid in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Thiodiglycolic Acid in your formulation.