Creative Biolabs is a leading service provider that focuses on cosmetic microbiological tests. Now we are proud to provide Staphylococcus aureus count service for our clients all over the world.

The Introduction of Staphylococcus aureus in Cosmetic Products

Staphylococcus aureus is a well-known Gram-positive round-shaped bacterium that belongs to the Firmicutes. As a commensal of the human microbiota, it can be frequently found in the upper respiratory tract and on the skin. Staphylococcus aureus leads to a series of illnesses, including skin infections, respiratory infections, food poisoning, as well as bone and joint infections.

Staphylococcal enterotoxins are thermostable and can not be destroyed in pasteurization temperatures. The presence of S. aureus in cosmetic products is not acceptable. Whether in the manufacturing process or during use by the end consumer. pathogens, opportunistic pathogens, and/or saprophytes can be found in cosmetics. Microbiological testing is not only used to determine product safety, but also to verify the effectiveness of product preservatives, as well as the shortest shelf life of the product stored under appropriate conditions, and the shelf life after opening.

Figure 1. Gram stain of Staphylococcus aureus. (Taylor, 2021)

ISO 22718 Test Procedure

In the cosmetics industry, Staphylococcus aureus must not be present in category 1 products in an amount of 1 gram or 1 mL, and must not be present in category 2 products in an amount of 0.1 g or 0.1 mL. The established ISO 22718 procedure provides a standard method to detect Staphylococcus aureus in cosmetic products.

To better ensure product quality and safety for clients, it is necessary to perform an appropriate microbiological risk analysis. When we get the samples, we will use a non-selective liquid medium (enriched broth) to detect Staphylococcus aureus, and then isolate it on a selective agar medium. Due to the wide variety of cosmetic products in this application field, this method may not be suitable for every detail of some products, and other equivalent methods can also be substituted.

Advantages of our Staphylococcus aureus Count Service

• Higher operating efficiency
• Suitable for a wide range of samples
• Ensure accuracy and credibility of results
• Low cost with fast results
• Fully customizable experimental design to expand beyond standard procedure

Equipped with world-leading technology platforms and professional scientific staff, Creative Biolabs is confident in offering the most qualified services and products for our customers all over the world. If you are interested in our products or services, please do not hesitate to contact us for more detailed information.

Reference

1. Taylor, T.; Unakal, C. Staphylococcus aureus. StatPearls, 2021.

• Aerobic Mesophilic Bacteria - Total Plate Count
• Preservative Efficacy Testing - Challenge Test
• Yeast and Mold Count
• Pseudomonas aeruginosa Count
• Candida albicans Count
• Escherichia coli Count
• Total Gram-Negative Test
• Total Gram-Positive Test
• Microbial Identification