Cosmetic ingredient dictionary
Polyquaternium-55 in cosmetics: what it is and what it does
Polyquaternium-55 is a cosmetic ingredient that holds a hairstyle. Open Beauty Facts finds it in 8 products, most often hair conditioners.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Polyquaternium-55 do in a product?
In a cosmetic product, Polyquaternium-55 holds a hairstyle. The EU’s CosIng database lists this job for it: hair fixing.
What other names and numbers does Polyquaternium-55 have?
- CAS number
- 306769-73-3
- CosIng reference
- 58834
Which products contain Polyquaternium-55?
Open Beauty Facts finds Polyquaternium-55 in the ingredient lists of 8 of the 22,021 products it has a list for, most often hair conditioners and hair care.
Products with it, by country of sale: United States 3 · France 2 · Spain 1 · South Africa 1.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Polyquaternium-55 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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