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preservative · ph-adjuster

Benzoic Acid

Generally safe·Strong evidence

A naturally occurring acid used to preserve and adjust pH in cosmetic formulas. It is generally recognized as safe at cosmetic use levels, with mild irritation possible on broken or very sensitive skin at higher concentrations.

Questions

Is benzoic acid safe in skincare?
Benzoic acid is graded as low concern in published safety reviews; it is used as a preservative at very low levels in cosmetics and skincare. Regulatory bodies support its safety at standard use concentrations.
What is benzoic acid used for?
Benzoic acid is a preservative that prevents microbial growth in formulas, extending shelf life. It is also occasionally used as an exfoliating or skin-smoothing agent at higher concentrations in specialized treatments.
Can benzoic acid irritate sensitive skin?
At preservative levels, published data does not show broad irritation risk. Some individuals with reactive skin or barrier damage may experience stinging; if this occurs, discontinue and patch test on intact skin before reintroduction.

Products with Benzoic Acid

References

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.