Stability Integrity Tests for Cosmetics | Cosmetics & Personal Care


 November 16, 2019

Routine stability integrity tests for cosmetics and personal care products are beneficial for manufacturers to incorporate into the lifecycle of their products. Understanding a product’s stability and shelf-life can be accomplished by measuring factors such as transportation and storage variability, ingredient quality, microbiological stability and packaging.

3 Forms of Stability Tests for Cosmetics (Part 3)

Our three-part series reviews three common forms of stability tests used for cosmetic products: physical and chemical integrity tests (part 1), microbiological stability tests (part 2) and finally, packaging stability tests (part 3).

What are Packaging Stability Integrity Tests

Packaging stability tests evaluate the impact that the container and external environmental factors may have on the product. For example, to determine potential shipping damage, experts perform mechanical shock testing and vibration testing. These kinds of tests can help to predict whether separation of the formulation is likely to occur during transportation. 

Read more: What is the Preservative Efficacy Test (PET) for Cosmetics

Stability Integrity Test Considerations for Cosmetic Packaging

Cosmetics packaging needs to do more than just look attractive and appealing to buyers. Packaging plays an essential role in protecting contents from the effects of humidity, atmospheric oxygen or water vapor during storage. If packaging fails, a brand’s reputation can be ruined, along with significant profit loss, product recalls and potential lawsuits. To protect cosmetics and personal care items from external factors, brands should conduct barrier tests that take into account the following considerations:.


Glass is the most inert packaging material. It does not react with cosmetic ingredients. For this reason, stability integrity tests should be conducted in glass as a control, as well as the actual packaging materials. This way enterprises can determine whether any adverse outcomes of the test are due to formulation or packaging failure. 


Brands should also conduct product weight loss tests to determine evaporation levels. Acceptable weight loss should not exceed 1% over a time period of one month. Thus, weight loss testing should be conducted over a period of three months or more.


Finally, leaking tests determine whether the contents may leak out of the packaging during transport. In this case, products should be tested in a variety of different orientations such as inverted, upright and lying on its side.

Consultative Support on Stability Integrity Tests for Cosmetics Brands

At Kinetik, we are immersed in the natural beauty market. With decades of vast industry experience, we provide innovative solutions that allow our clients to formulate the best product possible. We work closely with cosmetic and personal care manufacturers by providing in-depth consultative support on stability integrity tests including physical and chemical integrity tests, microbiological stability tests and finally, packaging stability tests.

See what sets us apart from the rest.

Contact us at (732) 335-5775 for more information. We are headquartered in the USA, but we work with clients and represent suppliers worldwide.