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Cosmetic ingredient dictionary

Rosin in cosmetics: what it is and what it does

Rosin is a cosmetic ingredient that makes the product thicker or thinner. Open Beauty Facts finds it in 9 products, most often nail makeup.

By Bravoora teamUpdated Sources checked 2 sourcesHow we check

What does Rosin do in a product?

In a cosmetic product, Rosin makes the product thicker or thinner, leaves a thin film on skin, hair or nails and holds a powder or a pressed product together. The EU’s CosIng database lists these jobs for it: viscosity controlling, film forming and binding.

viscosity controllingfilm formingbinding

What other names and numbers does Rosin have?

CAS number
8050-09-7
EC number
232-475-7 (I)
CosIng reference
92437

Which products contain Rosin?

Open Beauty Facts finds Rosin in the ingredient lists of 9 of the 22,021 products it has a list for, most often nail makeup and nail polishes.

  • Nail makeup2
  • Nail polishes2

Products with it, by country of sale: Norway 7 · Canada 1 · France 1.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Rosin 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’.

  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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