COSMETIC LENS
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Preservatives

Sodium Benzoate

苯甲酸钠

What it does

  • Prevents yeast, bacteria, and mold growth
  • Works best at low pH

Evidence

Strong evidence

Safe up to 2.5% per CIR. Most effective below pH 5.

Skin types

Well suited for: All

Generally well-tolerated.

Interactions

Use with care Ascorbic Acid

Can form trace benzene when combined with Vitamin C and exposed to heat/light. Modern formulations minimize this.

Irritation potential
Low
Comedogenic rating
0 / 5
Pregnancy
Generally considered safe during pregnancy

Safe at cosmetic concentrations.

Good to know

Popular paraben alternative. Often paired with potassium sorbate.

References

Compound data from PubChem (U.S. National Library of Medicine).

Related ingredients

Phenoxyethanol Methylparaben Propylparaben Methylisothiazolinone Potassium Sorbate Ethylhexylglycerin

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Educational information only — not medical advice. Always patch test and consult a dermatologist for skin concerns.