Worth a closer look
Suspected endocrine disruptor Chemical of concern Restricted in the EU
- What it can be used for
- Kills or slows microbes, preserves the product and reduces or masks body odor (the functions the EU ingredient database, CosIng, lists for it; a product may use it for any of them)
- CAS number
- 101-20-2
Why it’s flagged
Under EU evaluation as an endocrine disruptor, or identified as one by a national authority (ED Lists II and III).
- EU ED List III: identified as an endocrine disruptor by a national authority. Source: EU endocrine disruptor lists (edlists.org)
EU ED List II: under evaluation as an endocrine disruptor in an EU process. List III: identified as one by a national authority in the EU.
Listed as a chemical of concern by the Campaign for Safe Cosmetics.
- “Triclosan and triclocarban”. Source: Campaign for Safe Cosmetics
The Campaign for Safe Cosmetics is an advocacy group. Its profiles explain why it considers these ingredients a concern.
Allowed in EU cosmetics only with limits.
- Annex III entry 100; products: Rinse-off products; max 1.5%; Purity criteria:; 3, 3', 4, 4'-Tetrachloroazobenzene<=1ppm; 3, 3', 4, 4'-Tetrachloroazoxybenzene<=1ppm.; For purposes other than inhibiting the development of. Source: EU Cosmetics Regulation, Annex III (restricted)
Annex III (restricted substances) or Annex V (preservatives) of the EU Cosmetics Regulation sets maximum amounts, allowed product types or required warnings.
What this page can’t tell you
These lists describe what a substance can do, its hazard. The risk from one product depends on how much is in it and how you use it, and the label doesn’t say how much.
Not being on a list doesn’t make an ingredient safe. It may never have been assessed.
Check your products
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Flagged the same way
Official lists checked September 2026. Spotted a mistake? Tell us.