What Is Preservative Efficacy Testing?
Preservative Efficacy Testing, commonly called the Challenge Test, is a critical quality and safety requirement for cosmetic products that contain…
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EU cosmetic & chemical compliance, made clear
Practical guides on CPSR, CPNP, labelling, lab testing and CLP — written by the regulatory team that gets your products to market.
The Role of Microbiological Testing in Cosmetic Safety
Microbiological testing is a fundamental part of cosmetic safety and quality control. Cosmetic products, especially those that contain water, can…
The Importance of Stability Testing in Cosmetic Products
Stability testing is a mandatory step in the development and safety assessment of cosmetic products. It evaluates how a product…
What Is a Challenge Test Exemption?
The Challenge Test, also known as the Preservative Efficacy Test, is a mandatory requirement for most cosmetic products placed on…
Understanding the Preservative Efficacy Test in Cosmetic Safety
The Preservative Efficacy (Challenge) Test plays a critical role in verifying the effectiveness of a cosmetic product’s preservative system. Its…