A gloved hand using a pipette to transfer a liquid containing yeasts and moulds - challenge test in cosmetics

The Challenge Test in Cosmetics: A Guide to microbiological quality standards

What Is The Challenge Test in cosmetics? The challenge test in cosmetics evaluates the effectiveness of a cosmetic product’s preservative system during production, storage, and the entire period of use by the end consumer. It is conducted during the product’s development phase. Essentially, the test simulates the microbiological stress the product will encounter under normal …