Disclosed herein is a composition comprising a biologically active agent a base oil an additional oil that is soluble in the base oil with a partition coefficient for the biologically active molecule that is at least twice that of the base oil where the base oil and the additional oil are present in the composition in an amount effective to reduce the amount of the biologically active agent in an aqueous phase to less than 80 wt % of the amount with just the base oil present in an otherwise identical composition at the same total oil loading a non-ionic surfactant and water.
