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Cosmetic ingredient dictionary

Undecylenamide DEA in cosmetics: what it is and what it does

Undecylenamide DEA is a cosmetic ingredient that makes hair easier to comb, softer or shinier. The EU allows it only with limits or conditions. Open Beauty Facts finds it in 5 products.

By Bravoora teamUpdated Sources checked 3 sourcesHow we check

What does Undecylenamide DEA do in a product?

In a cosmetic product, Undecylenamide DEA makes hair easier to comb, softer or shinier, makes the product thicker or thinner and helps against dandruff. The EU’s CosIng database lists these jobs for it: hair conditioning, viscosity controlling, antidandruff, antimicrobial, antistatic and foam boosting.

hair conditioningviscosity controllingantidandruffantimicrobialantistaticfoam boosting

What other names and numbers does Undecylenamide DEA have?

CAS number
25377-64-4
EC number
246-914-5
CosIng reference
38823

Is Undecylenamide DEA restricted in the EU?

Yes, it has limits. The EU allows it only with limits or conditions of use, such as a maximum amount or a warning on the label (Annex III of Regulation 1223/2009, entry 60).

The annex entry sets the exact limits, the products it may be used in and any warning the label must carry.

Which products contain Undecylenamide DEA?

Open Beauty Facts finds Undecylenamide DEA in the ingredient lists of 5 of the 22,021 products it has a list for.

Products with it, by country of sale: Spain 3 · Germany 1 · France 1.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Undecylenamide DEA turns up, not how much of the market it is.

On these listsRestricted in the EU

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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