INCI name

SODIUM BENZOATE

Sodium benzoate

A preservative that works best in acidic formulas.

What it is

Sodium benzoate is the sodium salt of benzoic acid. It is an allowed preservative in the EU (Annex V) and is most effective at low pH.

Where it is used

Toners, cleansers, products with organic or natural claims, often with potassium sorbate.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

Functions

Anticorrosive
Preventing and or inhibiting the corrosion of the packaging material.
Fragrance
Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.
Preservative
Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.

EU regulation

EU · Annex V, entry 1Benzoic acid and its sodium salt
Product type
a) Rinse-off products, except oral care products b) Oral care products c) Leave-on products
Maximum concentration
a) 2.5% (acid) b) 1.7% (acid) c) 0.5% (acid)
As of
3 November 2026 · (EC) 2009/1223

Safety Gate alerts (EU)

1 alerts about dangerous cosmetics in the EU mention this substance. An alert concerns a specific product, usually one that breaks EU rules.

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Products with this ingredient (7658)

Check a full ingredient list