Cosmetic ingredient dictionary
Sodium Thiosulfate in cosmetics: what it is and what it does
Sodium Thiosulfate is a cosmetic ingredient that changes the chemistry of hair, as in perms. Open Beauty Facts finds it in 15 products, most often soaps.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Sodium Thiosulfate do in a product?
In a cosmetic product, Sodium Thiosulfate changes the chemistry of hair, as in perms. The EU’s CosIng database lists this job for it: reducing.
What other names and numbers does Sodium Thiosulfate have?
- CAS number
- 7772-98-7, 10102-17-7
- EC number
- 231-867-5
- CosIng reference
- 38103
Which products contain Sodium Thiosulfate?
Open Beauty Facts finds Sodium Thiosulfate in the ingredient lists of 15 of the 22,021 products it has a list for, most often soaps, bar soaps and dermatological soaps.
Products with it, by country of sale: Germany 4 · France 2 · Peru 1 · Belgium 1.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Sodium Thiosulfate 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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