Cosmetic ingredient dictionary
Polybutylene Terephthalate in cosmetics: what it is and what it does
Polybutylene Terephthalate is a cosmetic ingredient that makes the product thicker or thinner. Open Beauty Facts finds it in 16 products, most often makeup.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Polybutylene Terephthalate do in a product?
In a cosmetic product, Polybutylene Terephthalate makes the product thicker or thinner and leaves a thin film on skin, hair or nails. The EU’s CosIng database lists these jobs for it: viscosity controlling and film forming.
What other names and numbers does Polybutylene Terephthalate have?
- CAS number
- 26062-94-2
- CosIng reference
- 78639
Which products contain Polybutylene Terephthalate?
Open Beauty Facts finds Polybutylene Terephthalate in the ingredient lists of 16 of the 22,021 products it has a list for, most often makeup, nail makeup and nail polishes.
Products with it, by country of sale: Norway 5 · Netherlands 4 · Australia 4 · France 2.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Polybutylene Terephthalate 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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