The invention relates to the use of a mixture of at least one quarternary ammonium compound and at least one anionic preservative and/or at least one alpha -hydroxycarboxylic acid as a preservative system for personal hygiene products. The invention also relates to a preservative system containing at least one quaternary ester compound (esterquat) and at least one alkaline salicylate in a weight ratio of 1:20 to 100:1.
