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Mechanical and thermal stability of skin cream - Oscillation and Thermal Loop Tests

The feel and longtime stability of skin cream, both in cosmetic and pharmaceutical applications, are important points for the acceptance of a product by the consumer. To a large amount, these properties are influenced by the manufacturing process but also by the ingredients. The replacement of ingredients with functional properties such as emulsifiers or stabilizers may be necessary because they are suspected to cause allergies or are not accepted by the consumer anymore. But the quality of the product needs to stay the same. Likewise, the exchange of an ingredient to reduce production costs must not result in a change of the physical properties typically associated with a certain product. All measurements in this application report were carried out with an Anton Paar MCR rheometer.

Introduction

The feel and longtime stability of skin cream, both in cosmetic and pharmaceutical applications, are important points for the acceptance of a product by the consumer. To a large amount, these properties are influenced by the manufacturing process but also by the ingredients. The replacement of ingredients with functional properties such as emulsifiers or stabilizers may be necessary because they are suspected to cause allergies or are not accepted by the consumer anymore. But the quality of the product needs to stay the same. Likewise, the exchange of an ingredient to reduce production costs must not result in a change of the physical properties typically associated with a certain product.

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