Ingredient · dataset v56
Undecylenamidopropyl Betaine and fungal acne
No known trigger
Why it's not a known trigger
An amide surfactant (undecylenic acid amide-linked); not a cleavable fatty ester. Round-3 2b, approved.
Evidence strength
Judged neutral — no trigger evidence
Function
Surfactant
Related surfactant
- Ammonium Laureth Sulfate — No known trigger
- Ammonium Lauryl Sulfate — No known trigger
- Ammonium Xylenesulfonate — No known trigger
- C12-20 Alkyl Glucoside — No known trigger
- C20-22 Alkyl Phosphate — May trigger · Limited evidence
- Capryloyl Glycine — No known trigger
- Caprylyl/Capryl Glucoside — No known trigger
- Cetearyl Glucoside — No known trigger
Sources
EU CosIng database — search the INCI name
Last reviewed: 2026-10-13 (dataset v56).
Questions
Does Undecylenamidopropyl Betaine trigger fungal acne?
No known trigger: An amide surfactant (undecylenic acid amide-linked); not a cleavable fatty ester. Round-3 2b, approved.
Does Undecylenamidopropyl Betaine feed Malassezia?
No known link: Undecylenamidopropyl Betaine is judged with no known trigger. One screened ingredient is not a product verdict — when in doubt, ask a dermatologist.
Is this medical advice?
No. We screen ingredient lists; we never diagnose, treat, or certify products. When in doubt, ask a dermatologist.
Check a full list containing Undecylenamidopropyl Betaine →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.