Recent Emulsion Technology in Cosmetics

Abstract

1) Emulsions are mixture of immiscible liquids in which one is dispersed in all over the other. They have been applied to many applications including cosmetics, foods, drug delivery system (DDS), fine chemicals, and chemical separations. Especially, emulsion technology is one of the most useful technique to formulate cosmetics such as eye cream, foundation, and foam cleansing. In general, the emulsions can be generated by mechanical agitation of two immiscible fluids. However, the emulsions obtained by conventional method have limited in stability, monodispersity, and complicate process. We describe here preparation techniques of representative cosmetic emulsions such as liposome, liquid crystal emulsion, nanoemulsion, multiple emulsion, and pickering emulsion. Furthermore, various factors which can control the physical properties of each cosmetic emulsions are briefly discussed.

Research Trends of Natural and Natural-derived Surfactant in Raw Materials

“…계면활성제는 계면의 자유에너지를 낮춰 계면의 성질을 현저히 변화시켜주는 물질로 분자 내에서 물에 녹기 쉬운 극성 을 일컫는 친수기(hydrophilic group)와 기름에 녹기 쉬운 비극 성을 일컫는 친유기(lipophlic group)를 동시에 가지는 양친매성 물질이며, 섞이지 않는 수상과 유상을 안정화 한다 (Cho et al, 2016;Yang et al, 2015). (Hwang et al, 2012;Yang et al, 2015). (Park, 2015;Yang & Ha, 2019).…”