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Personal Care Products Test
Microbiological Testing of Health, Beauty, Personal Care, Cosmetic Products
Microorganisms in cosmetics may cause biological or chemical change in the product and can harm cosmetic, health, beauty, and personal care products. Cosmetics do not need to be sterile, but their preservative system must able to take care of harmful microbial contamination that can damage the products.
Products are tested by the following methods:
- Aerobic Plate Count
- This test determines the total number of aerobic bacteria per ml or gram of the product. This test gives you total count of bacteria present.
- It is a 48 to 72 hour test. This is a routine test, ordered on each lot of manufactured products.
- Yeast and Mold Count
- This test determines the total number of yeast and fungi per ml or gram of the product. It is carried out for five days.
- Enrichment Method for Specific Pathogen Screening
- This testing is carried out to assure that the harmful bacteria are not present not even in very low numbers. Therefore, the product is enriched by growing in the enrichment broth so pathogenic bacteria, if present in very low number, will be able to multiply and be detected.
- Staphylococcus aureus Test
- E coli test
- Pseudomonas test
- Microbial Identification
- Organisms are isolated from a product and if it is required to know which organisms they are, the Microbial Identification Test of their products is done. Isolates are identified starting with observing their morphology, Gram stained and observed. This gives an initial clue about whether they are gram negative or gram positive. which are then identified if necessary.