Stability & Compatibility

Ensure the stability and compatibility of your cosmetics

The stability of a cosmetic product is its ability to retain its initial properties under specified conditions of storage and use. In other words, it is the product’s resistance to variations over time. Concurrently, a product's shelf life, i.e. the period during which it remains of acceptable quality, is a fundamental criterion.

The stability of cosmetic products is essential for guaranteeing their quality and safety over time. Eurofins Cosmetics & Personal Care's expertise in stability testing ensures that you maintain the original properties of your products, even after extended periods of storage and use. Discover how we can help you ensure that your cosmetics meet the most stringent standards.

We offer a complete range of studies to meet the specific requirements of your cosmetic products:

• Accelerated Stability Study: This is ideal if you want to guarantee a shelf life of over 30 months, thereby avoiding the need for an expiry date on the packaging.
• Stability Study: Conducted under the most neutral conditions possible, independent of the final packaging, to assess product stability under various conditions.
• Compatibility Study: Carried out in the final packaging to analyse interactions between the product and its packaging under different conditions.
• Period After Opening Study: Determines how long a product remains stable and safe for human use after first opening.

Our tests include a comprehensive analysis of essential parameters, but we can also tailor our assessments to meet your specific needs, including:

• Colour and Appearance
• Odour
• Density
• Viscosity
• pH measurement
• Weight loss
• Packaging integrity
• Microbiological analysis
• Challenge test

As each cosmetic product is unique, Eurofins Cosmetics & Personal Care adapts to your specific formulations and adjusts the time points and test conditions according to your requirements.