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Cosmetic ingredient dictionary

Isobutylparaben in cosmetics: what it is and what it does

Isobutylparaben is a cosmetic ingredient that slows the growth of microbes on the skin. The EU has banned it in cosmetics. Open Beauty Facts finds it in 17 products, most often hair care.

By Bravoora teamUpdated Sources checked 3 sourcesHow we check

What does Isobutylparaben do in a product?

In a cosmetic product, Isobutylparaben slows the growth of microbes on the skin. The EU’s CosIng database lists this job for it: antimicrobial.

antimicrobial

What other names and numbers does Isobutylparaben have?

CAS number
4247-02-3
EC number
224-208-8
CosIng reference
34612

Is Isobutylparaben restricted in the EU?

Yes. The EU has banned Isobutylparaben in cosmetics (Regulation (EU) No 358/2014, which added it to Annex II of Regulation 1223/2009, the list of prohibited substances).

Which products contain Isobutylparaben?

Open Beauty Facts finds Isobutylparaben in the ingredient lists of 17 of the 22,021 products it has a list for, most often hair care, face care and face scrubs.

  • Hair care3
  • Face care2
  • Face scrubs2

Products with it, by country of sale: France 6 · Norway 3 · Germany 2 · Bolivia 1.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Isobutylparaben 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
  3. EU Regulation 1223/2009 on cosmetic products (the annexes)

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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