4-HYDROXYBENZOIC ACID is graded C (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING (Restricted use).
4-HYDROXYBENZOIC ACID
Safety grade: C
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.
It is used in cosmetic products as a preservative to prevent the growth of bacteria, mold, and yeast, extending the shelf life and keeping products safe to use.
Graded using: COSING.
- EU COSING — Restricted use
Last verified: June 9, 2026
Safer alternatives to 4-HYDROXYBENZOIC ACID
- SORBIC ACID — Grade B. Sorbic acid is a broad-spectrum preservative that prevents bacterial and mold growth.
- POTASSIUM SORBATE — Grade B. Potassium sorbate prevents microbial spoilage and extends product shelf life similarly.
- DEHYDROACETIC ACID — Grade B. Dehydroacetic acid functions as a broad-spectrum preservative against bacteria and fungi.
- PHENOXYETHANOL — Grade B**. Phenoxyethanol is a widely-used broad-spectrum preservative protecting against bacteria and mold.
Other Preservative ingredients
- SODIUM BENZOATE — Grade C
- BENZYL ALCOHOL — Grade C**
- BENZOIC ACID — Grade C**
- METHYLISOTHIAZOLINONE — Grade C
- METHYLPARABEN — Grade C
- SALICYLIC ACID — Grade C**