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Cosmetic ingredient dictionary

Benzisothiazolinone in cosmetics: what it is and what it does

Benzisothiazolinone is a cosmetic ingredient that slows the growth of microbes on the skin. Open Beauty Facts finds it in 44 products, most often soaps.

By Bravoora teamUpdated Sources checked 2 sourcesHow we check

What does Benzisothiazolinone do in a product?

In a cosmetic product, Benzisothiazolinone 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 Benzisothiazolinone have?

CAS number
2634-33-5
EC number
220-120-9
CosIng reference
32133

Which products contain Benzisothiazolinone?

Open Beauty Facts finds Benzisothiazolinone in the ingredient lists of 44 of the 22,021 products it has a list for, most often soaps and liquid soaps.

  • Soaps4
  • Liquid soaps1

Products with it, by country of sale: France 25 · United States 6 · Switzerland 3 · Canada 3.

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