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Cosmetic ingredient dictionary

Polyhydroxystearic Acid in cosmetics: what it is and what it does

Polyhydroxystearic Acid is a cosmetic ingredient that keeps oil and water mixed. Open Beauty Facts finds it in 144 products, most often sunscreen.

By Bravoora teamUpdated Sources checked 2 sourcesHow we check

What does Polyhydroxystearic Acid do in a product?

In a cosmetic product, Polyhydroxystearic Acid keeps oil and water mixed. The EU’s CosIng database lists this job for it: emulsifying.

emulsifying

What other names and numbers does Polyhydroxystearic Acid have?

CAS number
27924-99-8, 58128-22-6
CosIng reference
79007

Which products contain Polyhydroxystearic Acid?

Open Beauty Facts finds Polyhydroxystearic Acid in the ingredient lists of 144 of the 22,021 products it has a list for, most often sunscreen, concealers and makeup.

  • Sunscreen26
  • Concealers25
  • Makeup5

Products with it, by country of sale: United States 54 · Norway 25 · France 17 · Turkey 8.

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

On these listsEmulsifiers

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

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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