Physico-chemical tests
For cosmetics to be safe and effective, they must undergo thorough physico-chemical tests. These analyses make it possible to assess the stability, consistency and compliance of the product with the declared specification. The MPR LABS laboratory specialises in complex physico-chemical testing of cosmetic products, providing precise results that help manufacturers meet market and regulatory requirements.
What does the physico-chemical testing of cosmetics cover?
Physico-chemical analyses of cosmetics is a set of tests that determine the physical and chemical properties of a product. These include, but are not limited to:
- Measurement of pH - key to assessing cosmetic compatibility with skin and mucous membranes,
- Density and viscosity analysis - allows the consistency and stability of the preparation to be determined,
- Organoleptic tests - including evaluation of aroma, colour and texture,
- Water activity test (AW) - important for product shelf life and risk of microbial growth,
- Stability and compatibility of the mass with the packaging - helps to determine whether the product degrades during the shelf life.
Each physico-chemical analysis is carried out with the utmost precision and the results make it possible to assess the durability and effectiveness of the cosmetic over its entire lifetime.
Physical and chemical laboratory - advanced technology and precision
Laboratory MPR-LABS is equipped with state-of-the-art measuring equipment that allows accurate physico-chemical testing of cosmetic products. Our team of experts ensures that each analysis complies with current industry standards and legislation.
In addition to the standard physical and chemical testsWe also often perform microbiological testsThe tests are used to assess the purity of the product and the effectiveness of the preservatives used. Only a comprehensive approach to cosmetic testing guarantees that the final product meets the highest quality standards.
When should physico-chemical testing of cosmetics be carried out?
Physico-chemical analyses are essential in the various stages of cosmetics production:
- during the new formulation development phase - to assess the stability and physical properties of the product,
- before the cosmetic is placed on the market - to meet regulatory requirements,
- during series production - to ensure quality repeatability,
- during durability testing - to determine shelf life after opening (PAO).
Our specialists provide detailed reports to help manufacturers make decisions on final product parameters.
Precise physico-chemical tests is the foundation of quality and safety for every cosmetic. Contact our laboratory to find out how we can help you analyse your products - visit MPRlabs.com.
What does the physicochemistry of a cosmetic include?
Cosmetic physicochemistry is a field that studies the physical and chemical properties of cosmetic ingredients and the product itself. This includes characteristics such as viscosity, pH, solubility, stability and behaviour of the cosmetic when exposed to different conditions.
What is the viscosity determination of a cosmetic?
Determining the viscosity of a cosmetic involves measuring the resistance of a liquid to flow. Viscosity affects the consistency of a cosmetic product, which is important for products such as creams, lotions, gels or shampoos.
What is the significance of a cosmetic density label?
Determining the density of a cosmetic allows the mass-to-volume ratio of the product to be determined. It is an important parameter that influences how a cosmetic is applied and can be important in determining its chemical composition and formulation.
Why is it important to determine the pH of a cosmetic?
Determining the pH of a cosmetic is important because the pH affects the stability and effectiveness of a product, as well as the safety of its use. Skin care products should have a pH appropriate to the natural reaction of the skin to prevent irritation.
What is HPLC and how is it applied to cosmetics?
HPLC (High Performance Liquid Chromatography) is an analytical technique for the separation and analysis of chemical ingredients in cosmetics. It is used for the identification, quantification of active ingredients and quality control of cosmetic raw materials.
What is LC-MS and how is it used in cosmetics?
LC-MS (Liquid Chromatography-Mass Spectrometry) is an advanced analytical technique that combines liquid chromatography with mass spectrometry. It is used in cosmetics to analyse chemical components, detect impurities and monitor product quality.
What is the DPPH (anti-radical) test in cosmetics?
The DPPH (2,2-diphenylpicrylhydrazyl) test is a method of assessing a cosmetic's ability to neutralise free radicals. It helps determine whether a product has antioxidant properties, which can protect the skin from oxidative stress and premature ageing.
What is the ABTS (anti-radicals) test in cosmetics?
The ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) test is used to assess a cosmetic's ability to neutralise free radicals. This test measures the antioxidant activity of cosmetics, helping to assess their potential to protect the skin from oxidative stress.
What is the importance of controlling heavy metals in cosmetics?
What does the peroxide number in a cosmetic mean?
The peroxide number is a measure of the presence of peroxides in a cosmetic, which can affect its stability. Peroxides can cause oxidation of cosmetic ingredients, leading to deterioration of the product and its properties.
What does ISO 3960:2017 regulate?
ISO 3960:2017 deals with methods for measuring the peroxide number in fats and oils, including those used in cosmetics. The peroxide number measures the amount of peroxides that can affect the quality and stability of cosmetics, especially in the context of their oxidation.
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