Ingredient · dataset v56
Cetrimonium Methosulfate and fungal acne
No known trigger
Why it's not a known trigger
A cetyl quaternary ammonium conditioner with an inert methosulfate counterion; N-bound chain (quat rule, cetrimonium chloride precedent). Round-6 2b, approved.
Evidence strength
Judged neutral — no trigger evidence
Function
Quat
Related quat
- Behentrimonium Chloride — No known trigger
- Behentrimonium Methosulfate — No known trigger
- Benzalkonium Chloride — No known trigger
- Myrtrimonium Bromide — No known trigger
- Stearalkonium Chloride — No known trigger
- Steartrimonium Chloride — No known trigger
Sources
EU CosIng database — search the INCI name
Last reviewed: 2026-10-13 (dataset v56).
Questions
Does Cetrimonium Methosulfate trigger fungal acne?
No known trigger: A cetyl quaternary ammonium conditioner with an inert methosulfate counterion; N-bound chain (quat rule, cetrimonium chloride precedent). Round-6 2b, approved.
Does Cetrimonium Methosulfate feed Malassezia?
No known link: Cetrimonium Methosulfate 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 Cetrimonium Methosulfate →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.