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Cosmetic ingredient dictionary

Tetrasodium Etidronate in cosmetics: what it is and what it does

Tetrasodium Etidronate is a cosmetic ingredient that makes the product thicker or thinner. The EU allows it only with limits or conditions. Open Beauty Facts finds it in 219 products, most often soaps.

By Bravoora teamUpdated Sources checked 3 sourcesHow we check

What does Tetrasodium Etidronate do in a product?

In a cosmetic product, Tetrasodium Etidronate makes the product thicker or thinner, binds metals in water so the product stays stable and keeps an emulsion from separating. The EU’s CosIng database lists these jobs for it: viscosity controlling, chelating and emulsion stabilising.

viscosity controllingchelatingemulsion stabilising

What other names and numbers does Tetrasodium Etidronate have?

CAS number
3794-83-0
EC number
223-267-7
CosIng reference
38570

Is Tetrasodium Etidronate restricted in the EU?

Yes, it has limits. The EU allows it only with limits or conditions of use, such as a maximum amount or a warning on the label (Annex III of Regulation 1223/2009, entry 53).

The annex entry sets the exact limits, the products it may be used in and any warning the label must carry.

Which products contain Tetrasodium Etidronate?

Open Beauty Facts finds Tetrasodium Etidronate in the ingredient lists of 219 of the 22,021 products it has a list for, most often soaps, dermatological soaps and bar soaps.

  • Soaps84
  • Dermatological soaps9
  • Bar soaps7

Products with it, by country of sale: France 88 · Norway 34 · Germany 15 · United States 15.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Tetrasodium Etidronate turns up, not how much of the market it is.

On these listsRestricted in the EU

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’.

  1. European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
  2. Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
  3. EU Regulation 1223/2009 on cosmetic products (the annexes)

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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