Abstract
The general preparation technique and characteristic behaviors of oil-in-water-in-oil and water-in-oil-in-water type multiple emulsions were described. For the preparation technique, the advantages and disadvantages of the single step procedure and double step procedure were discussed. The formulations for stable multiple emulsions and the assessment of their stability was described. The results of authors experiments, the stabilization of an unstable agent in the innermost phase and the studies of characteristic texture of O/W/O type multiple emulsion were also described here.
