Abstract
. Abstract: The W/O emulsion is widely used for cosmetics because of its w ater-proofing benefit and long-lasting moisturizing effect. However, because of low stability of the W /O emulsion, it is very important to control the con-centration of electrolyte and emulsifying agent, and ratio of w ater phase. Among these factors, we focused on the effects of different structures of emulsifying agents on the ch ange of stability. Emulsifying agents were sorted into polyglyceryl ester, silicone and sugar series. We also examined the emulsifyingability of emulsifier by changing the ratio of normal and silicon oil in the oil phase. Through these experimental results, we figured out the property of w/o emulsion depending on the types of emulsifiers, and observe d the stability of emulsion considering the change of particles and viscosity over time.Keywords: W/O emulsion, emulsifier, particle, stability, viscosity
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