The rate at which these changes occur depends on the nature of the active constituents, the type of formulation, the packaging and, of course, the storage/use conditions (temperature, light and humidity). The product remains fit for use as long as these changes have no adverse effects on application and/or consumer safety. Stability data should be generated with the product stored in the proposed commercial packaging, under accelerated conditions and/or via long-term testing at room temperature or in ambient warehouse conditions.

Mérieux NutriSciences provides a wide range of aging conditions, including climatic and xenon chambers for artificial exposure to light and weathering, and appropriate methods to test performance changes for an extensive range of goods.