PREPARATION OF W1/O/W2 TYPE MULTIPLE EMULSION

摘要

PROBLEM TO BE SOLVED: To provide a W1/O/W2 type multiple emulsion by forming a primary W1/O emulsion using an elastomeric silicon polyether and subsequently dispersing the primary emulsion in a final continuous phase W2. SOLUTION: This multiple W1/O/W2 emulsion is formed by first preparing a primary W1/O emulsion using a silicone fluid as an oil phase (O) and an elastomeric silicone polyether as an emulsifier for dispersing the water phase W1 in the oil phase (O) and subsequently dispersing the primary W1/O emulsion in the final continuous water phase W2. The multiple emulsion is useful for preparing a formulation for treating the hair, skin or underarm areas of human body. Vitamins or drugs can be incorporated into the oil phase (O) or into the either water phase W1 or W2 of the multiple emulsion.