Formed better by nonionic surfactants in a two-stage emulsification procedure ❖ The internal and external aqueous phase are separated by oil phase ❖ We can add a nonionic surfactant by using two stage emulsification procedure ❖ In order to make o/w/o system, it has two stage process. First, make a primary emulsion with w/o then add to the aqueous phase ➢ primary emulsion from ispopropyl mysristate (47.5%), sorbitan monooleate (2.5%), and distilled water to 100%, then the primary emulsion (50%) is added to a polyoxyethylene sorbitan monooleate (2%) solution in water ➢ the emulsifier used are both hydrophobic and hydrophilic because it has water and oil