Shiseido succeeds in developing a new emulsification method that greatly expands the possibilities of product development

 Shiseido has succeeded in developing an epoch-making emulsification technology that achieves both high emulsification stability and usability / effect at a high level. Furthermore, through joint research with Tokyo University of Science, we succeeded in photographing the emulsified interface with this technology for the first time in the world, and elucidated the mechanism of this emulsification. In the new emulsification method developed this time, the emulsifier exists in a flat "nanodisc" structure at the interface (border between oil and water) to form extremely stable emulsified particles. In addition, when the nanodisc structure is applied to the skin, it changes to a uniform coating film, achieving a comfortable feeling of use without stickiness and high functionality.

Shiseido has taken on the challenge of developing a new emulsification technology that can enhance functionality while pursuing a good feel and high quality, based on the approach of Functionality / Japan Quality of the original R & D philosophy "DYNAMIC HARMONY". Part of this research was presented at the "International Cosmetic Chemists of Japan Cancun Interim Conference 2021" (IFSCC * 1 Conference 2021), a world conference for cosmetics engineers. This technology is also applied to "HAKU Medicinal Day-China Whitening Essence" released on January 21st and "MaQuillage Dramatic Essence Liquid" released on February 21st. We will continue to apply it to the development of various products regardless of beauty as one of Shiseido's core emulsification technologies.

The emulsification technology developed this time utilizes a surfactant that forms a spherical structure called "vesicles" only in a specific environment. By mixing oil with an aqueous solution containing vesicles, the vesicles change into a disk-shaped structure called "nanodiscs" that adhere uniformly and firmly to the interface. This makes it possible to produce an extremely stable emulsion even with a small amount of surfactant. Furthermore, through joint research with Tokyo University of Science, we succeeded in photographing for the first time in the world how vesicles are structurally transferred to nanodiscs and adsorbed on the interface of oil and water with an electron microscope.


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