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Predictive microbiology for cosmetics based on physicals, chemicals and concentration parameters

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Challenge test (CT) is essential to assure the efficiency of the preservative system in products. A previous study realized by our staff in 2012, carried out to evaluate the influence of three parameters (ethanol, pH and water) on the microbiological cosmetics products conservation. Following this work, a correlation between a w (based on the glycerine concentration) and the selected parameter has been demonstrated. In the present study, smaller limits of ethanol, pH and glycerine were applied to determinate CT necessity.
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Keywords: Design Expert; challenge test; cosmetics; predictive microbiology; safety

Document Type: Research Article

Publication date: February 1, 2015

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