Ingramaben PD2 is an antimicrobial preservative system with broad spectrum activity that is highly effective against Gram-negative bacteria, Gram-positive bacteria, yeasts and mold. It is a clear, viscous liquid and is convenient and ready-to-use. It minimizes the problems associated with incorporating solid parabens. It does not change the appearance of cosmetics, and it can be used as a very cost effective preservative due to its low use level requirement. Ingramaben PD2 is compatible with anionic, cationic, and non-ionic cosmetic ingredients.