It is used as a preservative in both cosmetics and food products, where it prevents both bacterial and fungal growth, though it is more active against the latter.//sodium benzoate has been found to have anti-inflammatory and antioxidant properties. //These properties can help to soothe irritated skin and reduce redness and swelling associated with various skin conditions, such as acne and rosacea.// usage 0.5% to 1% // for external use only