Concentrated solutions of preservatives: their technological and analytical advantages in cosmetic products.
Synopsis Introducing concentrated solutions of preservatives (CSP) provides a methodology both for the use of preservative systems and for their routine control in cosmetic products. From some typical examples, characteristics of such CSP are described and it is shown how the accurate determination of every component present in the initial liquid blend eliminates the tedious determinations in the finished product where only a single analysis of one preservative is necessary. Quick and simple methods are described for the analysis of CSP containing parabens, Germall 115(R) and Kathon CG(R). An appropriate new analytical approach is given for routine controls without any tedious extraction and /or costly equipment. In addition it is shown how this methodology provides a number of substantial advantages at every step of development of new products, storage of raw materials and manufacturing, leading to increased safety and ensuring energy and time savings.
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Parfums Rochas, 75 rue d'Aigremont, F 78300 Poissy, France.
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