What is Chanellege Test in Cosmetics?

Microbiological analysis is one of the most important cosmetic products quality tests. Microbiological analysis shows whether there are any microorganisms in the product.

However, it is not enough that there is no microbiological reproduction in a product. If the product has a preservative, "Challenge Test" should also be performed.

So what is Challenge Test?

Challenge Test is the name given to the test performed to determine the effectiveness of preservatives in cosmetic products. Therefore, another name is "Protective Efficiency Test".

For the protective efficacy test, Pseudomonas aeruginosa ATCC 9027, Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 8739, Candida albicans ATCC 10231, Aspergillus brasiliensis ATCC 16404 are combined with certain proportions of cosmetic products. The product is expected to inhibit the growth of microorganisms within limits.

It will be proved that a cosmetic product that is suitable both as a result of microbiological analysis and challenge test is also microbially safe.