Quality Comparison of W/O and O/W Photo-Protection Creams

Feb 17th, 2009

Tatiana Maria de Almeida Silva, Ketylin Fernanda Migliato, Hérida Regina Nunes Salgado and Vera Lucia Borges, Faculty of Pharmaceutical Sciences, UNESP

An emulsion used in photo-protection creams, like any emulsion, is a heterogeneous system made up of at least an immiscible liquid dispersed in another liquid in the form of small drops. These systems have only minimal stability, which can be increased by adding substances such as surfactants or finely divided solids.

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