AbstractThe effects of some hydrophilic additives on the cloud point and, emulsion inversion point have been studied. Hydrophilic additives cause an increase in the effective HLB of the surfactants as was indicated by raise of the cloud point and decrease of the emulsion inversion point value, depending on the nature of additive, its concentration and polyoxyethylene chain length. In conclusion it may be stated and emphasized that it is necessary to take into account the HLB value correction in order to select an emulsifier blend for a given system.