Multi-emulsion composition and preparation method thereof

Abstract

The invention provides multi-emulsion composition. An oil-in-water type emulsifier covers micelle formed by a first grease phase and is dispersed in a water phase to be used as an inner phase; and a water-in-oil type emulsifier covers micelle formed by the inner phase and is dispersed in a second grease phase. The invention further provides a preparation method of emulsion. The preparation method comprises the following steps: adding a mixed solution of the first grease phase and the oil-in-water type emulsifier into the water phase to prepare oil-in-water emulsion; by taking the oil-in-water emulsion as the inner phase, adding the inner phase into a mixed solution containing the water-in-oil type emulsifier and the second grease phase; and stirring uniformly to obtain the multi-emulsion composition. According to the multi-emulsion composition provided by the invention, the first grease phase has a smaller emulsification grain diameter and has high and low temperature stability in a wider temperature range, and can be used and transported under different environments. Furthermore, the greasy feeling of traditional oil-in-water emulsion is avoided and a user has better fresh and cool feeling, moisture feeling and nourishing feeling and has a wider application prospect in the field of daily chemicals.

Description

technical field [0001] The invention belongs to the technical field of cosmetics, and relates to an emulsion composition and a preparation method thereof, in particular to a multiple emulsion composition and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, consumers have higher and higher requirements for beauty and skin care products, which no longer meet the daily basic skin care needs, and more importantly, pursue a good sense of experience while satisfying skin care needs. At present, there are many brands and types of skin care cosmetics on the market. From the perspective of formula composition, oil-in-water and water-in-oil skin care products are the majority. [0003] Water-in-oil skin care products are composed of water phase, oil phase and water-in-oil emulsifier. The form of the system is to disperse water in the oil in the form of tiny droplets. The oil phase is the external phase or dispers...

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Problems solved by technology

Moreover, since the emulsion itself is in a thermodynamically unstable state, the oil phase components tend to polymerize. Therefore, during the transportation of cosmetics, or during the shelf life, the oil phase polymerization is prone to occur and the particle size of the emulsion will become larger. In severe cases, oily water may even appear. The phenomenon of separation, especially when skin care products are placed in hotter or colder areas for a long time, the phenomenon of oil-water separation is more obvious. These defects limit the scope of use of skin care products and are not conducive to long-distance transportation of skin care products

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