Optiphen is a unique liquid preservative formulation which consists of phenoxyethanol and an emollient base. The combination of these ingredients provides optimized protection against microbial growth from bacteria and yeast while giving the finished product exceptional feel. It can be used alone and functions synergistically with other preservatives. Optiphen is applicable for use in a variety of personal care preparations such as aqueous and anhydrous systems as well as emulsions.