METHENAMINE is graded B** (Low Concern) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING (Restricted use).
METHENAMINE
Safety grade: B**
This preservative is permitted in EU cosmetics up to a maximum concentration under EU Cosmetics Regulation (EC) No 1223/2009. To be sold legally in the EU or UK, a product must stay within this limit.
Methenamine is used as a preservative to prevent bacterial and fungal contamination, ensuring cosmetic products stay fresh and safe to use throughout their shelf life.
Graded using: COSING.
- EU COSING — Restricted use
Last verified: June 9, 2026
Other Preservative ingredients
- SODIUM BENZOATE — Grade C
- PHENOXYETHANOL — Grade B**
- BENZYL ALCOHOL — Grade C**
- POTASSIUM SORBATE — Grade B
- BENZOIC ACID — Grade C**
- METHYLISOTHIAZOLINONE — Grade C
- METHYLPARABEN — Grade C
- SALICYLIC ACID — Grade C**