Preservative Efficacy Testing of Cosmetics and Toiletries
People, surfaces, environment, equipment, air and water can be sources of microbes, including bacteria, fungi, and viruses. Preservatives are ingredients added to the product to stop, slow down, or even reduce the microbial growth. There are various factors that affect a preservative system, such as the physical properties of the product, its packaging, and the preservative ingredients used. The importance of preservative efficacy testing (PET) is to check the efficacy of preservative system to ensure that the product is protected from microbes throughout its shelf life.
This course introduces the concepts of preservative efficacy testing (PET), which is also known as challenge test, or preservative test, and is required to show that preservatives added to the product are actually working effectively.
There is a 5 question test in this course. The test is untimed. You will take the test twice, once at the beginning of the course (called the "pre-assessment") and again at the end of the course (called the "post-assessment"). They are the same questions, but you are not shown the answers until after taking the post assessment. You must score an 80% on the post-assessment to pass the course. If you score below 80%, you will start the course again from the beginning and then retake the post assessment.
- Self-paced, practical online training