Encyclopedia
Preservative Boosters
7 preservative booster ingredients explained in plain English.
Caprylyl Glycol Caprylyl Glycol A small humectant and skin-conditioning glycol with strong preservative-boosting activity. The unsung half of many modern preservative blends. Ethylhexylglycerin Ethylhexylglycerin A multifunctional preservative booster with deodorising and skin-conditioning properties, used to enhance the efficacy of primary preservative systems. Glyceryl Caprylate Glyceryl Caprylate A multifunctional emollient that doubles as a preservative booster and mild co-emulsifier. Derived from glycerin and coconut-sourced caprylic acid. Magnolia Bark Extract Magnolia Officinalis Bark Extract A dual-purpose ingredient offering antimicrobial preservation boosting alongside anti-inflammatory and antioxidant activity. Oil-soluble, pH-independent. Potassium Sorbate Potassium Sorbate Mild preservative booster effective against yeast and mold. Common pairing with sodium benzoate. Sodium Anisate Sodium Anisate A natural-origin preservative booster from anise, effective against yeast and mold. The standard partner to sodium levulinate for broad-spectrum natural preservation. Sodium Levulinate Sodium Levulinate A natural-origin preservative booster derived from levulinic acid. Effective against bacteria, but needs a partner for yeast and mold coverage.