The purpose of stability testing cosmetic products is to ensure that a new or modified product meets the intended physical, chemical and microbiological quality standards as well as functionality and aesthetics when stored under appropriate conditions. Accelerated tests, developed because of the relatively short development cycle for cosmetic products, enable the prediction of stability. A commonly accepted practice is to support the forecasts obtained from accelerated stability testing by carrying out periodic post-launch monitoring of retained samples stored at ambient temperatures. The resultant information can also be useful in further improving the product and in refining the methodology used for accelerated stability testing
The shelf life, or expiration date, of a cosmetic or personal care product is the period during which the manufacturer has determined a product to be best suited for use. In Europe, cosmetic products with a lifespan longer than 30 months must show a “period after opening” (POA) time. That is, the time in months when the product will remain in good condition after the consumer General Stability of a Cosmetic Product Whether conducted in real time or under accelerated conditions, tests should be done in order to assure:
- Stability and physical integrity of cosmetic products under appropriate conditions of storage, transport and use,
- Chemical stability,
- Microbiological stability,
- The compatibility between the contents and the container.
ITC Labs capabilities
Calibrated Humidity chambers available for stability studies at different temperatures and humidity conditions.
- Thermal study at 48°C/75 % RH for 48 hrs.
- Accelerated condition (As per Regulations)
- Real time condition (As per Regulations)