Thermal Stability Tests on Cosmetics and Finished Substances

stability; It refers to the capacity of cosmetic products to maintain their specified physical or chemical properties.

Stability Tests in Cosmetic Products

Stability analysis is a type of analysis performed to determine whether a cosmetic product continues to perform its initial functions and maintains its reliability when stored under appropriate conditions. The parameters to be considered in the stability test are determined according to the product, packaging, storage, shipment, presentation and consumption characteristics.

Accelerated Stability Tests: It refers to the durability standards made under forced conditions compared to normal storage conditions in order to accelerate the chemical and physical deterioration of the cosmetic product.

Long Term Stability Test: It refers to the stability studies in which the physical, chemical, biological and microbiological properties of the cosmetic product are evaluated, including the anticipated shelf life period.

Features such as the composition, formulation, packaging, and use of cosmetic products are the determining factors in the stability tests that can be made on the products in order to determine their durability in storage conditions before opening or during the usage period after opening. Stability tests generally check for changes in some parameters:

pH
Packaging changes (breakage, cracking, sealing)
Sensory Changes (Smell, color, appearance)
viscosity change
weight change
Determination of microbial load

Stability tests in cosmetic products are carried out to determine shelf life or to verify label information.

Stability Tests on Finished Substances

Long-term, accelerated and, if necessary, intermediate condition stability data must be submitted for the active substances contained in the finished product for which the registration application has been applied. In general, appearance, quantification and degradation products should be evaluated for each active substance during stability. Other change-sensitive features should also be tested where necessary.

Stress Tests: Stress tests of the active ingredient can help identify possible degradation products. This can help determine the degradation pathways, the stability of the molecule, and demonstrate the suitability of the analytical methods used. However, stress testing for these degradation products may not be necessary in cases where long-term and accelerated stability studies have shown that certain known degradation products of the active substance do not form.

EUROLAB offers testing and compliance services to you, our manufacturers, with our professional staff in our laboratory, where the expectations of our manufacturers can be more than met within the scope of Thermal Stability Tests, which are carried out to preserve the durability, physical and chemical properties of cosmetic products, to store them in suitable conditions and to fulfill the expected usability functions.