--- title: "Cosmetic Physicochemical Testing" description: "Measure cosmetic physicochemical properties against agreed specifications." image: "https://cosmetic-labs.com/wp-content/uploads/physicochemical-analysis-service-1200x1200-1.webp" --- # Cosmetic Physicochemical Testing > Measure cosmetic physicochemical properties against agreed specifications. Source: https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/physicochemical-analysis Created: 2025-07-03T19:53:11+00:00 Modified: 2026-10-25T11:04:44+00:00 Author: Emilie SCHOL Cosmetic Physicochemical Testing | Cosmetic Labs ## What is Cosmetic Physicochemical Testing? An agreed profile of product properties and specifications. ### Why do you need this service? Physicochemical testing profiles selected product properties against an agreed specification. Use it for formulation comparison, quality investigation or batch assessment, choosing measurements that answer the actual product question. ## Be the first company on this service page No published company profiles are linked to Cosmetic Physicochemical Testing or its more specific services yet. Explore the service categories or add an explicitly supported capability to your company profile. [List your company](https://cosmetic-labs.com/account/companies/new) Definition ## Combined physicochemical analysis A broad analytical workup brings several measurements together to establish a formulation baseline or investigate a quality problem. Unlike a single active assay or particle-size measurement, this service considers a selected set of properties and how they relate to the product specification. ### Core measurements pH, using a preparation and electrode suited to the sample - Density or specific gravity under stated conditions - Viscosity and rheological behavior at controlled temperature and shear - Appearance, color and odor observations - Particle or droplet characterization where relevant Acceptance criteria should reflect the formulation, intended use and manufacturing process. There is no universal pH range that proves skin compatibility for every facial product. ### Monitoring change Repeating these measurements during storage or thermal-stress studies helps identify separation, thickening, color change or chemical degradation. Packaging observations may be included, but migration or ingredient-loss questions usually need targeted analytical methods. The report should specify sample preparation, test conditions, time points and observed trends. Accelerated data can reveal weaknesses and support a stability program, but cannot automatically convert a few months of testing into a fixed multiyear shelf life. Safety and claims conclusions require evidence beyond the property profile. Applications ## Characterising product properties Composition, pH, viscosity and other physical measurements can help compare prototypes or investigate a change. The method and sample conditions need to match the product. A viscosity result does not directly determine skin absorption, and a spectral signal does not establish every aspect of purity. Storage measurements can track appearance or selected components over time. Accelerated conditions can reveal instability, but weeks of exposure do not automatically represent years of shelf life or establish an accurate expiry date. Define which specifications are approved and which remain developmental. Physicochemical data contributes to quality decisions; preservation performance, packaging compatibility, clinical efficacy and product safety require their own relevant evidence. ExplorationLearn more about Physicochemical TestingCharacterise cosmetic composition, structure and physical behaviour through active content, particle, pH, flow and molecular-property measurements. Explore another Physicochemical Testing page on cosmetic-labs.com. #### [Active ingredient quantification](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/active-quantification) Quantify selected active compounds in cosmetic raw materials or finished products using suitable analytical methods and sample-specific controls. [Check this service](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/active-quantification) #### [pH and viscosity profiling](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/ph-viscosity) Measure cosmetic acidity, viscosity and flow behaviour under defined conditions to compare formulations and investigate product specifications. [Check this service](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/ph-viscosity) #### [Particle size distribution](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/particle-size) Measure particle-size distributions in cosmetic dispersions, powders or pigments to investigate material properties and compare batch consistency. [Check this service](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/particle-size) #### [Analytical Microscopy](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/microscopic-analysis) Cosmetic emulsion microscopy images oil droplets on glass slides to characterize droplet size and distribution after homogenization. [Check this service](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/microscopic-analysis) #### [Spectroscopic Characterisation](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/spectroscopic) Investigate cosmetic ingredients and formulations with suitable spectroscopic methods for identification, comparison or selected quantitative measurements. [Check this service](https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/spectroscopic) Continue with [Google](https://cosmetic-labs.com/?lean_auth=start&provider=google&redirect_to=https://cosmetic-labs.com/&error_return=https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/physicochemical-analysis) [LinkedIn](https://cosmetic-labs.com/?lean_auth=start&provider=linkedin&redirect_to=https://cosmetic-labs.com/&error_return=https://cosmetic-labs.com/services/in-vitro-testing/cosmetic-quality-testing/characterization/physicochemical-analysis) What does “Verified” mean? Verified means the claimant’s company affiliation was checked. Something not right?Let us know if any information on this page is incorrect or if you have concerns about who manages it. [Report an issue](https://cosmetic-labs.com/platform/contact) © 2026 Cosmetic Labs. 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