Sodium Polyitaconate in cosmetics: what it is and what it does

What does Sodium Polyitaconate do in a product?

In a cosmetic product, Sodium Polyitaconate binds metals in water so the product stays stable. The EU’s CosIng database lists this job for it: chelating.

What other names and numbers does Sodium Polyitaconate have?

CAS number

26099-89-8

CosIng reference

91411

Which products contain Sodium Polyitaconate?

Open Beauty Facts finds Sodium Polyitaconate in the ingredient lists of 5 of the 22,021 products it has a list for, most often hair care.

• Hair care1

Products with it, by country of sale: United States 2 · Switzerland 1 · Germany 1 · Australia 1.

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

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

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