J. Cosmet. Sci., 55, 399-422 Quly/August 2004) Papers Presented at the Annual Scientific Seminar of the Society of Cosmetic Chemists (Friday's Program) May 7-8, 2004 Mohegan Sun Uncasville, Connecticut 399

400 JOURNAL OF COSMETIC SCIENCE FORMULATION BASICS Ken Klein Cosmetech Laboratories, Inc., Fai,field, NJ Emulsions are by far the most complicated and difficult of all of the vehicles we cosmetic chemists prepare. We must be concerned with a myriad ofissues: Application qualities Cost of goods Delivery of "actives" when applicable Preservation Stability (of the emulsion and of the package with the emulsion) Efficacy This short talk will discuss formulation strategies and how to address each of the above issues. We will also cover how to intelligently choose raw materials and manufacturing issues. Lastly, we will review commercial products to ascertain their strategies (sometimes good ones and sometimes not so good ones).

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