Protective Efficacy and Stability Analyses

The use of cosmetics and personal care products is increasing day by day and constitutes an important place among the consumer products needed. These products, which are used as human care and treatment, directly affect human health. Cosmetic microbiology is an important link in product safety.

  • Protective Efficacy and Stability Analyses

    The fact that the product remains as prescribed throughout its shelf life is an indication that the product is stable. Cosmetic microbiology is also an important component of this process.

    In accordance with the 6th article of the T.C. Medicines and Medical Devices Agency Cosmetics Regulation of the Turkish Ministry of Health, a cosmetic product must be safe for human health when placed on the market, when applied under normal and foreseeable conditions, or when the product's presentation, labelling, explanations regarding its use or are applied according to the recommended usage conditions and information provided by the manufacturer are taken into account.

    In our laboratory, T.C. Microbiology Analysis, Stability (Shelf Life) and Protective Efficacy (Challenge Test) Analysis are performed in accordance with the TÜRKAK Accreditation in accordance with the Cosmetic Regulation of the Turkish Medicines and Medical Devices Agency of the Ministry of Health.

    • Microbiology Analysis in Cosmetic Products
    • Protective Efficacy (Challenge Test) Analysis
    • Stability (Shelf Life) Analysis

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    Frequently Asked Questions

    • What is Protective Efficacy Analysis?

      Protective efficacy analysis is a laboratory test that measures the effectiveness of preservatives that inhibit microbial growth in cosmetic, personal care, and biocidal products. It confirms that the product is safe and effective.

    • What is Stability Analysis?

      Stability analysis confirms that products maintain their physical, chemical, and microbiological properties throughout their shelf life. This test is critical for product quality and safety.

    • Why Are Tests Important?

      Protective and stability tests guarantee that the product is safe and effective throughout its shelf life. They are also mandatory for legal compliance and consumer safety.

    • Which Products Are Tested?

      Cosmetic products, biocidal and personal care products, detergents, cleaning and hygiene products are subject to protective efficacy and stability testing.

    • What Parameters Are Measured in the Tests?

      Microbial growth inhibition, protective efficacy, pH, color, odor, and chemical composition changes are analyzed. Stability tests verify shelf life and performance.

    • How Is the Protective Efficacy Test Performed?

      Specific microorganisms are added to the product, and growth inhibition is monitored. It is performed in a laboratory environment in accordance with ISO, EN, and ASTM standards.

    • How Are Stability Tests Performed?

      The product is stored under different temperature, light, and humidity conditions. Physical, chemical, and microbiological changes are measured periodically, and the product's shelf life is determined.

    • Why Are Tests Important for Human Health?

      Ineffective protectants can lead to microbial contamination and pose a risk of skin irritation, allergies, or toxic effects. Tests ensure user safety.

    • How Long Does the Analysis Take?

      Protective efficacy tests generally take 3–7 days. Stability tests can vary from 1–12 weeks depending on the product and conditions.

    • Are Tests Mandatory for Legal Compliance?

      Yes, protective efficacy and stability tests are legal requirements for cosmetic and biocidal products. Accredited laboratory reports have official validity.

    • How Are Samples Prepared?

      Samples are delivered to the laboratory in sterile, clean, and appropriate quantities. The sample quantity is determined based on the test type and product form

    • How Do Efficacy Tests Affect Product Quality?

      The tests confirm that the product provides the microbial protection and efficacy stated on the label. This is critical for consumer confidence and brand reputation.

    • How Do Stability Tests Determine Shelf Life?

      They determine the safe usage period and optimal storage conditions by monitoring physical, chemical, and microbiological changes.

    • How Are Prices Determined?

      Prices vary depending on the test method, sample size, and scope. Comprehensive tests can be costly, but they are critical for product safety and legal compliance.

    • What Are the Advantages of an Accredited Laboratory?

      Laboratories with ISO/IEC 17025 accreditation provide reliable and officially valid results. Reports are valid for export, certification, and regulatory audits.

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