Cosmetic ingredient dictionary
Thiolactic Acid in cosmetics: what it is and what it does
Thiolactic Acid is a cosmetic ingredient that stops the product reacting with oxygen and going off. Open Beauty Facts finds it in 8 products.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Thiolactic Acid do in a product?
In a cosmetic product, Thiolactic Acid stops the product reacting with oxygen and going off, hides an unwanted smell or taste, and removes hair. The EU’s CosIng database lists these jobs for it: antioxidant, masking, depilatory, hair waving or straightening and reducing.
What other names and numbers does Thiolactic Acid have?
- CAS number
- 79-42-5
- EC number
- 201-206-5
- CosIng reference
- 80771
Which products contain Thiolactic Acid?
Open Beauty Facts finds Thiolactic Acid in the ingredient lists of 8 of the 22,021 products it has a list for.
Products with it, by country of sale: Norway 7 · Turkey 1.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Thiolactic Acid turns up, not how much of the market it is.
Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors
Sources
The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.
- European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
- Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check
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