Anhydrous Cosmetics: Why Oils, Powders and Waxes Need Fewer Tests
Anhydrous cosmetics testing explained: why oils, powders and waxes skip microbiological and challenge testing under ISO 29621 but still need stability testing.
Cosmetic Testing
Lexora Journal
Cosmetic Testing
Guides and updates on EU cosmetic & chemical compliance from the Lexora regulatory team.
Which Cosmetic Tests Do You Actually Need? A Product-Group Guide
Which cosmetic tests do you need? A product-group table showing when microbiological and challenge testing apply, and what every formulation…
Sunscreen SPF Testing Explained: Methods and EU Requirements
How is SPF tested for the EU market? In vivo ISO 24444 vs in vitro UVA, the one-third rule and…
What Is Preservative Efficacy Testing? ISO 11930 Challenge Test Explained
Preservative Efficacy Testing, commonly called the Challenge Test, is a critical quality and safety requirement for cosmetic products that contain…
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…
Microbiological Testing for Cosmetics: ISO 17516 Limits and Standards
Cosmetic microbiology plays a central role in ensuring product safety and regulatory compliance. Cosmetic products do not need to be…
Understanding PAO Requirements in Cosmetic Products
The Period After Opening is a key element of cosmetic safety information. It tells consumers how long they can safely…
Cosmetic Laboratory Testing Requirements for Product Safety
The safety of a finished cosmetic product depends on robust and validated cosmetic laboratory testing. Regulatory frameworks, especially the EU…