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Aug 17, 2016
Non water-soluble substance in water andhomogeneously emulsified to form an emulsion of the phenomenon knownemulsification. Emulsifier in cosmetics mainly for the production of creams andlotions. Common silty neutral cream and cream are 0 / W type emulsion, ananionic emulsifier fatty acid soap (soap) emulsified with soap emulsionpreparation less oil emulsion easier, and soap gelling can it has a greaterviscosity. For a large number of cold cream containing oil phase of theemulsion mostly w / O type, the choice of water volume and large viscousnatural lanolin emulsion. Currently the most widely used non-ionic emulsifiersare nonionic emulsifiers security reasons, low irritation.
Famous sorbitan fatty acid ester (Span) andethylene oxide adduct (Tween) is a good composite nonionic emulsifiers, Spanlipophilic, hydrophilic Tween, a mixture of both used in O / W emulsion can beformed good stability, high skin-friendly emulsion.